1// -*- C++ -*- 2//===------------------------ functional ----------------------------------===// 3// 4// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 5// See https://llvm.org/LICENSE.txt for license information. 6// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 7// 8//===----------------------------------------------------------------------===// 9 10#ifndef _LIBCPP_FUNCTIONAL 11#define _LIBCPP_FUNCTIONAL 12 13/* 14 functional synopsis 15 16namespace std 17{ 18 19template <class Arg, class Result> 20struct unary_function 21{ 22 typedef Arg argument_type; 23 typedef Result result_type; 24}; 25 26template <class Arg1, class Arg2, class Result> 27struct binary_function 28{ 29 typedef Arg1 first_argument_type; 30 typedef Arg2 second_argument_type; 31 typedef Result result_type; 32}; 33 34template <class T> 35class reference_wrapper 36 : public unary_function<T1, R> // if wrapping a unary functor 37 : public binary_function<T1, T2, R> // if wraping a binary functor 38{ 39public: 40 // types 41 typedef T type; 42 typedef see below result_type; // Not always defined 43 44 // construct/copy/destroy 45 reference_wrapper(T&) noexcept; 46 reference_wrapper(T&&) = delete; // do not bind to temps 47 reference_wrapper(const reference_wrapper<T>& x) noexcept; 48 49 // assignment 50 reference_wrapper& operator=(const reference_wrapper<T>& x) noexcept; 51 52 // access 53 operator T& () const noexcept; 54 T& get() const noexcept; 55 56 // invoke 57 template <class... ArgTypes> 58 typename result_of<T&(ArgTypes&&...)>::type 59 operator() (ArgTypes&&...) const; 60}; 61 62template <class T> reference_wrapper<T> ref(T& t) noexcept; 63template <class T> void ref(const T&& t) = delete; 64template <class T> reference_wrapper<T> ref(reference_wrapper<T>t) noexcept; 65 66template <class T> reference_wrapper<const T> cref(const T& t) noexcept; 67template <class T> void cref(const T&& t) = delete; 68template <class T> reference_wrapper<const T> cref(reference_wrapper<T> t) noexcept; 69 70template <class T> struct unwrap_reference; // since C++20 71template <class T> struct unwrap_ref_decay : unwrap_reference<decay_t<T>> { }; // since C++20 72template <class T> using unwrap_reference_t = typename unwrap_reference<T>::type; // since C++20 73template <class T> using unwrap_ref_decay_t = typename unwrap_ref_decay<T>::type; // since C++20 74 75template <class T> // <class T=void> in C++14 76struct plus : binary_function<T, T, T> 77{ 78 T operator()(const T& x, const T& y) const; 79}; 80 81template <class T> // <class T=void> in C++14 82struct minus : binary_function<T, T, T> 83{ 84 T operator()(const T& x, const T& y) const; 85}; 86 87template <class T> // <class T=void> in C++14 88struct multiplies : binary_function<T, T, T> 89{ 90 T operator()(const T& x, const T& y) const; 91}; 92 93template <class T> // <class T=void> in C++14 94struct divides : binary_function<T, T, T> 95{ 96 T operator()(const T& x, const T& y) const; 97}; 98 99template <class T> // <class T=void> in C++14 100struct modulus : binary_function<T, T, T> 101{ 102 T operator()(const T& x, const T& y) const; 103}; 104 105template <class T> // <class T=void> in C++14 106struct negate : unary_function<T, T> 107{ 108 T operator()(const T& x) const; 109}; 110 111template <class T> // <class T=void> in C++14 112struct equal_to : binary_function<T, T, bool> 113{ 114 bool operator()(const T& x, const T& y) const; 115}; 116 117template <class T> // <class T=void> in C++14 118struct not_equal_to : binary_function<T, T, bool> 119{ 120 bool operator()(const T& x, const T& y) const; 121}; 122 123template <class T> // <class T=void> in C++14 124struct greater : binary_function<T, T, bool> 125{ 126 bool operator()(const T& x, const T& y) const; 127}; 128 129template <class T> // <class T=void> in C++14 130struct less : binary_function<T, T, bool> 131{ 132 bool operator()(const T& x, const T& y) const; 133}; 134 135template <class T> // <class T=void> in C++14 136struct greater_equal : binary_function<T, T, bool> 137{ 138 bool operator()(const T& x, const T& y) const; 139}; 140 141template <class T> // <class T=void> in C++14 142struct less_equal : binary_function<T, T, bool> 143{ 144 bool operator()(const T& x, const T& y) const; 145}; 146 147template <class T> // <class T=void> in C++14 148struct logical_and : binary_function<T, T, bool> 149{ 150 bool operator()(const T& x, const T& y) const; 151}; 152 153template <class T> // <class T=void> in C++14 154struct logical_or : binary_function<T, T, bool> 155{ 156 bool operator()(const T& x, const T& y) const; 157}; 158 159template <class T> // <class T=void> in C++14 160struct logical_not : unary_function<T, bool> 161{ 162 bool operator()(const T& x) const; 163}; 164 165template <class T> // <class T=void> in C++14 166struct bit_and : unary_function<T, bool> 167{ 168 bool operator()(const T& x, const T& y) const; 169}; 170 171template <class T> // <class T=void> in C++14 172struct bit_or : unary_function<T, bool> 173{ 174 bool operator()(const T& x, const T& y) const; 175}; 176 177template <class T> // <class T=void> in C++14 178struct bit_xor : unary_function<T, bool> 179{ 180 bool operator()(const T& x, const T& y) const; 181}; 182 183template <class T=void> // C++14 184struct bit_xor : unary_function<T, bool> 185{ 186 bool operator()(const T& x) const; 187}; 188 189template <class Predicate> 190class unary_negate // deprecated in C++17 191 : public unary_function<typename Predicate::argument_type, bool> 192{ 193public: 194 explicit unary_negate(const Predicate& pred); 195 bool operator()(const typename Predicate::argument_type& x) const; 196}; 197 198template <class Predicate> // deprecated in C++17 199unary_negate<Predicate> not1(const Predicate& pred); 200 201template <class Predicate> 202class binary_negate // deprecated in C++17 203 : public binary_function<typename Predicate::first_argument_type, 204 typename Predicate::second_argument_type, 205 bool> 206{ 207public: 208 explicit binary_negate(const Predicate& pred); 209 bool operator()(const typename Predicate::first_argument_type& x, 210 const typename Predicate::second_argument_type& y) const; 211}; 212 213template <class Predicate> // deprecated in C++17 214binary_negate<Predicate> not2(const Predicate& pred); 215 216template <class F> unspecified not_fn(F&& f); // C++17 217 218template<class T> struct is_bind_expression; 219template<class T> struct is_placeholder; 220 221 // See C++14 20.9.9, Function object binders 222template <class T> inline constexpr bool is_bind_expression_v 223 = is_bind_expression<T>::value; // C++17 224template <class T> inline constexpr int is_placeholder_v 225 = is_placeholder<T>::value; // C++17 226 227 228template<class Fn, class... BoundArgs> 229 unspecified bind(Fn&&, BoundArgs&&...); 230template<class R, class Fn, class... BoundArgs> 231 unspecified bind(Fn&&, BoundArgs&&...); 232 233template<class F, class... Args> 234 invoke_result_t<F, Args...> invoke(F&& f, Args&&... args) // C++17 235 noexcept(is_nothrow_invocable_v<F, Args...>); 236 237namespace placeholders { 238 // M is the implementation-defined number of placeholders 239 extern unspecified _1; 240 extern unspecified _2; 241 . 242 . 243 . 244 extern unspecified _Mp; 245} 246 247template <class Operation> 248class binder1st // deprecated in C++11, removed in C++17 249 : public unary_function<typename Operation::second_argument_type, 250 typename Operation::result_type> 251{ 252protected: 253 Operation op; 254 typename Operation::first_argument_type value; 255public: 256 binder1st(const Operation& x, const typename Operation::first_argument_type y); 257 typename Operation::result_type operator()( typename Operation::second_argument_type& x) const; 258 typename Operation::result_type operator()(const typename Operation::second_argument_type& x) const; 259}; 260 261template <class Operation, class T> 262binder1st<Operation> bind1st(const Operation& op, const T& x); // deprecated in C++11, removed in C++17 263 264template <class Operation> 265class binder2nd // deprecated in C++11, removed in C++17 266 : public unary_function<typename Operation::first_argument_type, 267 typename Operation::result_type> 268{ 269protected: 270 Operation op; 271 typename Operation::second_argument_type value; 272public: 273 binder2nd(const Operation& x, const typename Operation::second_argument_type y); 274 typename Operation::result_type operator()( typename Operation::first_argument_type& x) const; 275 typename Operation::result_type operator()(const typename Operation::first_argument_type& x) const; 276}; 277 278template <class Operation, class T> 279binder2nd<Operation> bind2nd(const Operation& op, const T& x); // deprecated in C++11, removed in C++17 280 281template <class Arg, class Result> // deprecated in C++11, removed in C++17 282class pointer_to_unary_function : public unary_function<Arg, Result> 283{ 284public: 285 explicit pointer_to_unary_function(Result (*f)(Arg)); 286 Result operator()(Arg x) const; 287}; 288 289template <class Arg, class Result> 290pointer_to_unary_function<Arg,Result> ptr_fun(Result (*f)(Arg)); // deprecated in C++11, removed in C++17 291 292template <class Arg1, class Arg2, class Result> // deprecated in C++11, removed in C++17 293class pointer_to_binary_function : public binary_function<Arg1, Arg2, Result> 294{ 295public: 296 explicit pointer_to_binary_function(Result (*f)(Arg1, Arg2)); 297 Result operator()(Arg1 x, Arg2 y) const; 298}; 299 300template <class Arg1, class Arg2, class Result> 301pointer_to_binary_function<Arg1,Arg2,Result> ptr_fun(Result (*f)(Arg1,Arg2)); // deprecated in C++11, removed in C++17 302 303template<class S, class T> // deprecated in C++11, removed in C++17 304class mem_fun_t : public unary_function<T*, S> 305{ 306public: 307 explicit mem_fun_t(S (T::*p)()); 308 S operator()(T* p) const; 309}; 310 311template<class S, class T, class A> 312class mem_fun1_t : public binary_function<T*, A, S> // deprecated in C++11, removed in C++17 313{ 314public: 315 explicit mem_fun1_t(S (T::*p)(A)); 316 S operator()(T* p, A x) const; 317}; 318 319template<class S, class T> mem_fun_t<S,T> mem_fun(S (T::*f)()); // deprecated in C++11, removed in C++17 320template<class S, class T, class A> mem_fun1_t<S,T,A> mem_fun(S (T::*f)(A)); // deprecated in C++11, removed in C++17 321 322template<class S, class T> 323class mem_fun_ref_t : public unary_function<T, S> // deprecated in C++11, removed in C++17 324{ 325public: 326 explicit mem_fun_ref_t(S (T::*p)()); 327 S operator()(T& p) const; 328}; 329 330template<class S, class T, class A> 331class mem_fun1_ref_t : public binary_function<T, A, S> // deprecated in C++11, removed in C++17 332{ 333public: 334 explicit mem_fun1_ref_t(S (T::*p)(A)); 335 S operator()(T& p, A x) const; 336}; 337 338template<class S, class T> mem_fun_ref_t<S,T> mem_fun_ref(S (T::*f)()); // deprecated in C++11, removed in C++17 339template<class S, class T, class A> mem_fun1_ref_t<S,T,A> mem_fun_ref(S (T::*f)(A)); // deprecated in C++11, removed in C++17 340 341template <class S, class T> 342class const_mem_fun_t : public unary_function<const T*, S> // deprecated in C++11, removed in C++17 343{ 344public: 345 explicit const_mem_fun_t(S (T::*p)() const); 346 S operator()(const T* p) const; 347}; 348 349template <class S, class T, class A> 350class const_mem_fun1_t : public binary_function<const T*, A, S> // deprecated in C++11, removed in C++17 351{ 352public: 353 explicit const_mem_fun1_t(S (T::*p)(A) const); 354 S operator()(const T* p, A x) const; 355}; 356 357template <class S, class T> const_mem_fun_t<S,T> mem_fun(S (T::*f)() const); // deprecated in C++11, removed in C++17 358template <class S, class T, class A> const_mem_fun1_t<S,T,A> mem_fun(S (T::*f)(A) const); // deprecated in C++11, removed in C++17 359 360template <class S, class T> 361class const_mem_fun_ref_t : public unary_function<T, S> // deprecated in C++11, removed in C++17 362{ 363public: 364 explicit const_mem_fun_ref_t(S (T::*p)() const); 365 S operator()(const T& p) const; 366}; 367 368template <class S, class T, class A> 369class const_mem_fun1_ref_t : public binary_function<T, A, S> // deprecated in C++11, removed in C++17 370{ 371public: 372 explicit const_mem_fun1_ref_t(S (T::*p)(A) const); 373 S operator()(const T& p, A x) const; 374}; 375 376template <class S, class T> const_mem_fun_ref_t<S,T> mem_fun_ref(S (T::*f)() const); // deprecated in C++11, removed in C++17 377template <class S, class T, class A> const_mem_fun1_ref_t<S,T,A> mem_fun_ref(S (T::*f)(A) const); // deprecated in C++11, removed in C++17 378 379template<class R, class T> unspecified mem_fn(R T::*); 380 381class bad_function_call 382 : public exception 383{ 384}; 385 386template<class> class function; // undefined 387 388template<class R, class... ArgTypes> 389class function<R(ArgTypes...)> 390 : public unary_function<T1, R> // iff sizeof...(ArgTypes) == 1 and 391 // ArgTypes contains T1 392 : public binary_function<T1, T2, R> // iff sizeof...(ArgTypes) == 2 and 393 // ArgTypes contains T1 and T2 394{ 395public: 396 typedef R result_type; 397 398 // construct/copy/destroy: 399 function() noexcept; 400 function(nullptr_t) noexcept; 401 function(const function&); 402 function(function&&) noexcept; 403 template<class F> 404 function(F); 405 template<Allocator Alloc> 406 function(allocator_arg_t, const Alloc&) noexcept; // removed in C++17 407 template<Allocator Alloc> 408 function(allocator_arg_t, const Alloc&, nullptr_t) noexcept; // removed in C++17 409 template<Allocator Alloc> 410 function(allocator_arg_t, const Alloc&, const function&); // removed in C++17 411 template<Allocator Alloc> 412 function(allocator_arg_t, const Alloc&, function&&); // removed in C++17 413 template<class F, Allocator Alloc> 414 function(allocator_arg_t, const Alloc&, F); // removed in C++17 415 416 function& operator=(const function&); 417 function& operator=(function&&) noexcept; 418 function& operator=(nullptr_t) noexcept; 419 template<class F> 420 function& operator=(F&&); 421 template<class F> 422 function& operator=(reference_wrapper<F>) noexcept; 423 424 ~function(); 425 426 // function modifiers: 427 void swap(function&) noexcept; 428 template<class F, class Alloc> 429 void assign(F&&, const Alloc&); // Removed in C++17 430 431 // function capacity: 432 explicit operator bool() const noexcept; 433 434 // function invocation: 435 R operator()(ArgTypes...) const; 436 437 // function target access: 438 const std::type_info& target_type() const noexcept; 439 template <typename T> T* target() noexcept; 440 template <typename T> const T* target() const noexcept; 441}; 442 443// Deduction guides 444template<class R, class ...Args> 445function(R(*)(Args...)) -> function<R(Args...)>; // since C++17 446 447template<class F> 448function(F) -> function<see-below>; // since C++17 449 450// Null pointer comparisons: 451template <class R, class ... ArgTypes> 452 bool operator==(const function<R(ArgTypes...)>&, nullptr_t) noexcept; 453 454template <class R, class ... ArgTypes> 455 bool operator==(nullptr_t, const function<R(ArgTypes...)>&) noexcept; 456 457template <class R, class ... ArgTypes> 458 bool operator!=(const function<R(ArgTypes...)>&, nullptr_t) noexcept; 459 460template <class R, class ... ArgTypes> 461 bool operator!=(nullptr_t, const function<R(ArgTypes...)>&) noexcept; 462 463// specialized algorithms: 464template <class R, class ... ArgTypes> 465 void swap(function<R(ArgTypes...)>&, function<R(ArgTypes...)>&) noexcept; 466 467template <class T> struct hash; 468 469template <> struct hash<bool>; 470template <> struct hash<char>; 471template <> struct hash<signed char>; 472template <> struct hash<unsigned char>; 473template <> struct hash<char16_t>; 474template <> struct hash<char32_t>; 475template <> struct hash<wchar_t>; 476template <> struct hash<short>; 477template <> struct hash<unsigned short>; 478template <> struct hash<int>; 479template <> struct hash<unsigned int>; 480template <> struct hash<long>; 481template <> struct hash<long long>; 482template <> struct hash<unsigned long>; 483template <> struct hash<unsigned long long>; 484 485template <> struct hash<float>; 486template <> struct hash<double>; 487template <> struct hash<long double>; 488 489template<class T> struct hash<T*>; 490template <> struct hash<nullptr_t>; // C++17 491 492} // std 493 494POLICY: For non-variadic implementations, the number of arguments is limited 495 to 3. It is hoped that the need for non-variadic implementations 496 will be minimal. 497 498*/ 499 500#include <__config> 501#include <type_traits> 502#include <typeinfo> 503#include <exception> 504#include <memory> 505#include <tuple> 506#include <utility> 507#include <version> 508 509#include <__functional_base> 510 511#if defined(_LIBCPP_HAS_BLOCKS_RUNTIME) && !defined(_LIBCPP_HAS_OBJC_ARC) 512#include <Block.h> 513#endif 514 515#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 516#pragma GCC system_header 517#endif 518 519_LIBCPP_BEGIN_NAMESPACE_STD 520 521#if _LIBCPP_STD_VER > 11 522template <class _Tp = void> 523#else 524template <class _Tp> 525#endif 526struct _LIBCPP_TEMPLATE_VIS plus : binary_function<_Tp, _Tp, _Tp> 527{ 528 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 529 _Tp operator()(const _Tp& __x, const _Tp& __y) const 530 {return __x + __y;} 531}; 532 533#if _LIBCPP_STD_VER > 11 534template <> 535struct _LIBCPP_TEMPLATE_VIS plus<void> 536{ 537 template <class _T1, class _T2> 538 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 539 auto operator()(_T1&& __t, _T2&& __u) const 540 _NOEXCEPT_(noexcept(_VSTD::forward<_T1>(__t) + _VSTD::forward<_T2>(__u))) 541 -> decltype (_VSTD::forward<_T1>(__t) + _VSTD::forward<_T2>(__u)) 542 { return _VSTD::forward<_T1>(__t) + _VSTD::forward<_T2>(__u); } 543 typedef void is_transparent; 544}; 545#endif 546 547 548#if _LIBCPP_STD_VER > 11 549template <class _Tp = void> 550#else 551template <class _Tp> 552#endif 553struct _LIBCPP_TEMPLATE_VIS minus : binary_function<_Tp, _Tp, _Tp> 554{ 555 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 556 _Tp operator()(const _Tp& __x, const _Tp& __y) const 557 {return __x - __y;} 558}; 559 560#if _LIBCPP_STD_VER > 11 561template <> 562struct _LIBCPP_TEMPLATE_VIS minus<void> 563{ 564 template <class _T1, class _T2> 565 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 566 auto operator()(_T1&& __t, _T2&& __u) const 567 _NOEXCEPT_(noexcept(_VSTD::forward<_T1>(__t) - _VSTD::forward<_T2>(__u))) 568 -> decltype (_VSTD::forward<_T1>(__t) - _VSTD::forward<_T2>(__u)) 569 { return _VSTD::forward<_T1>(__t) - _VSTD::forward<_T2>(__u); } 570 typedef void is_transparent; 571}; 572#endif 573 574 575#if _LIBCPP_STD_VER > 11 576template <class _Tp = void> 577#else 578template <class _Tp> 579#endif 580struct _LIBCPP_TEMPLATE_VIS multiplies : binary_function<_Tp, _Tp, _Tp> 581{ 582 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 583 _Tp operator()(const _Tp& __x, const _Tp& __y) const 584 {return __x * __y;} 585}; 586 587#if _LIBCPP_STD_VER > 11 588template <> 589struct _LIBCPP_TEMPLATE_VIS multiplies<void> 590{ 591 template <class _T1, class _T2> 592 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 593 auto operator()(_T1&& __t, _T2&& __u) const 594 _NOEXCEPT_(noexcept(_VSTD::forward<_T1>(__t) * _VSTD::forward<_T2>(__u))) 595 -> decltype (_VSTD::forward<_T1>(__t) * _VSTD::forward<_T2>(__u)) 596 { return _VSTD::forward<_T1>(__t) * _VSTD::forward<_T2>(__u); } 597 typedef void is_transparent; 598}; 599#endif 600 601 602#if _LIBCPP_STD_VER > 11 603template <class _Tp = void> 604#else 605template <class _Tp> 606#endif 607struct _LIBCPP_TEMPLATE_VIS divides : binary_function<_Tp, _Tp, _Tp> 608{ 609 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 610 _Tp operator()(const _Tp& __x, const _Tp& __y) const 611 {return __x / __y;} 612}; 613 614#if _LIBCPP_STD_VER > 11 615template <> 616struct _LIBCPP_TEMPLATE_VIS divides<void> 617{ 618 template <class _T1, class _T2> 619 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 620 auto operator()(_T1&& __t, _T2&& __u) const 621 _NOEXCEPT_(noexcept(_VSTD::forward<_T1>(__t) / _VSTD::forward<_T2>(__u))) 622 -> decltype (_VSTD::forward<_T1>(__t) / _VSTD::forward<_T2>(__u)) 623 { return _VSTD::forward<_T1>(__t) / _VSTD::forward<_T2>(__u); } 624 typedef void is_transparent; 625}; 626#endif 627 628 629#if _LIBCPP_STD_VER > 11 630template <class _Tp = void> 631#else 632template <class _Tp> 633#endif 634struct _LIBCPP_TEMPLATE_VIS modulus : binary_function<_Tp, _Tp, _Tp> 635{ 636 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 637 _Tp operator()(const _Tp& __x, const _Tp& __y) const 638 {return __x % __y;} 639}; 640 641#if _LIBCPP_STD_VER > 11 642template <> 643struct _LIBCPP_TEMPLATE_VIS modulus<void> 644{ 645 template <class _T1, class _T2> 646 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 647 auto operator()(_T1&& __t, _T2&& __u) const 648 _NOEXCEPT_(noexcept(_VSTD::forward<_T1>(__t) % _VSTD::forward<_T2>(__u))) 649 -> decltype (_VSTD::forward<_T1>(__t) % _VSTD::forward<_T2>(__u)) 650 { return _VSTD::forward<_T1>(__t) % _VSTD::forward<_T2>(__u); } 651 typedef void is_transparent; 652}; 653#endif 654 655 656#if _LIBCPP_STD_VER > 11 657template <class _Tp = void> 658#else 659template <class _Tp> 660#endif 661struct _LIBCPP_TEMPLATE_VIS negate : unary_function<_Tp, _Tp> 662{ 663 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 664 _Tp operator()(const _Tp& __x) const 665 {return -__x;} 666}; 667 668#if _LIBCPP_STD_VER > 11 669template <> 670struct _LIBCPP_TEMPLATE_VIS negate<void> 671{ 672 template <class _Tp> 673 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 674 auto operator()(_Tp&& __x) const 675 _NOEXCEPT_(noexcept(- _VSTD::forward<_Tp>(__x))) 676 -> decltype (- _VSTD::forward<_Tp>(__x)) 677 { return - _VSTD::forward<_Tp>(__x); } 678 typedef void is_transparent; 679}; 680#endif 681 682 683#if _LIBCPP_STD_VER > 11 684template <class _Tp = void> 685#else 686template <class _Tp> 687#endif 688struct _LIBCPP_TEMPLATE_VIS equal_to : binary_function<_Tp, _Tp, bool> 689{ 690 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 691 bool operator()(const _Tp& __x, const _Tp& __y) const 692 {return __x == __y;} 693}; 694 695#if _LIBCPP_STD_VER > 11 696template <> 697struct _LIBCPP_TEMPLATE_VIS equal_to<void> 698{ 699 template <class _T1, class _T2> 700 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 701 auto operator()(_T1&& __t, _T2&& __u) const 702 _NOEXCEPT_(noexcept(_VSTD::forward<_T1>(__t) == _VSTD::forward<_T2>(__u))) 703 -> decltype (_VSTD::forward<_T1>(__t) == _VSTD::forward<_T2>(__u)) 704 { return _VSTD::forward<_T1>(__t) == _VSTD::forward<_T2>(__u); } 705 typedef void is_transparent; 706}; 707#endif 708 709 710#if _LIBCPP_STD_VER > 11 711template <class _Tp = void> 712#else 713template <class _Tp> 714#endif 715struct _LIBCPP_TEMPLATE_VIS not_equal_to : binary_function<_Tp, _Tp, bool> 716{ 717 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 718 bool operator()(const _Tp& __x, const _Tp& __y) const 719 {return __x != __y;} 720}; 721 722#if _LIBCPP_STD_VER > 11 723template <> 724struct _LIBCPP_TEMPLATE_VIS not_equal_to<void> 725{ 726 template <class _T1, class _T2> 727 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 728 auto operator()(_T1&& __t, _T2&& __u) const 729 _NOEXCEPT_(noexcept(_VSTD::forward<_T1>(__t) != _VSTD::forward<_T2>(__u))) 730 -> decltype (_VSTD::forward<_T1>(__t) != _VSTD::forward<_T2>(__u)) 731 { return _VSTD::forward<_T1>(__t) != _VSTD::forward<_T2>(__u); } 732 typedef void is_transparent; 733}; 734#endif 735 736 737#if _LIBCPP_STD_VER > 11 738template <class _Tp = void> 739#else 740template <class _Tp> 741#endif 742struct _LIBCPP_TEMPLATE_VIS greater : binary_function<_Tp, _Tp, bool> 743{ 744 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 745 bool operator()(const _Tp& __x, const _Tp& __y) const 746 {return __x > __y;} 747}; 748 749#if _LIBCPP_STD_VER > 11 750template <> 751struct _LIBCPP_TEMPLATE_VIS greater<void> 752{ 753 template <class _T1, class _T2> 754 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 755 auto operator()(_T1&& __t, _T2&& __u) const 756 _NOEXCEPT_(noexcept(_VSTD::forward<_T1>(__t) > _VSTD::forward<_T2>(__u))) 757 -> decltype (_VSTD::forward<_T1>(__t) > _VSTD::forward<_T2>(__u)) 758 { return _VSTD::forward<_T1>(__t) > _VSTD::forward<_T2>(__u); } 759 typedef void is_transparent; 760}; 761#endif 762 763 764// less in <__functional_base> 765 766#if _LIBCPP_STD_VER > 11 767template <class _Tp = void> 768#else 769template <class _Tp> 770#endif 771struct _LIBCPP_TEMPLATE_VIS greater_equal : binary_function<_Tp, _Tp, bool> 772{ 773 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 774 bool operator()(const _Tp& __x, const _Tp& __y) const 775 {return __x >= __y;} 776}; 777 778#if _LIBCPP_STD_VER > 11 779template <> 780struct _LIBCPP_TEMPLATE_VIS greater_equal<void> 781{ 782 template <class _T1, class _T2> 783 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 784 auto operator()(_T1&& __t, _T2&& __u) const 785 _NOEXCEPT_(noexcept(_VSTD::forward<_T1>(__t) >= _VSTD::forward<_T2>(__u))) 786 -> decltype (_VSTD::forward<_T1>(__t) >= _VSTD::forward<_T2>(__u)) 787 { return _VSTD::forward<_T1>(__t) >= _VSTD::forward<_T2>(__u); } 788 typedef void is_transparent; 789}; 790#endif 791 792 793#if _LIBCPP_STD_VER > 11 794template <class _Tp = void> 795#else 796template <class _Tp> 797#endif 798struct _LIBCPP_TEMPLATE_VIS less_equal : binary_function<_Tp, _Tp, bool> 799{ 800 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 801 bool operator()(const _Tp& __x, const _Tp& __y) const 802 {return __x <= __y;} 803}; 804 805#if _LIBCPP_STD_VER > 11 806template <> 807struct _LIBCPP_TEMPLATE_VIS less_equal<void> 808{ 809 template <class _T1, class _T2> 810 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 811 auto operator()(_T1&& __t, _T2&& __u) const 812 _NOEXCEPT_(noexcept(_VSTD::forward<_T1>(__t) <= _VSTD::forward<_T2>(__u))) 813 -> decltype (_VSTD::forward<_T1>(__t) <= _VSTD::forward<_T2>(__u)) 814 { return _VSTD::forward<_T1>(__t) <= _VSTD::forward<_T2>(__u); } 815 typedef void is_transparent; 816}; 817#endif 818 819 820#if _LIBCPP_STD_VER > 11 821template <class _Tp = void> 822#else 823template <class _Tp> 824#endif 825struct _LIBCPP_TEMPLATE_VIS logical_and : binary_function<_Tp, _Tp, bool> 826{ 827 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 828 bool operator()(const _Tp& __x, const _Tp& __y) const 829 {return __x && __y;} 830}; 831 832#if _LIBCPP_STD_VER > 11 833template <> 834struct _LIBCPP_TEMPLATE_VIS logical_and<void> 835{ 836 template <class _T1, class _T2> 837 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 838 auto operator()(_T1&& __t, _T2&& __u) const 839 _NOEXCEPT_(noexcept(_VSTD::forward<_T1>(__t) && _VSTD::forward<_T2>(__u))) 840 -> decltype (_VSTD::forward<_T1>(__t) && _VSTD::forward<_T2>(__u)) 841 { return _VSTD::forward<_T1>(__t) && _VSTD::forward<_T2>(__u); } 842 typedef void is_transparent; 843}; 844#endif 845 846 847#if _LIBCPP_STD_VER > 11 848template <class _Tp = void> 849#else 850template <class _Tp> 851#endif 852struct _LIBCPP_TEMPLATE_VIS logical_or : binary_function<_Tp, _Tp, bool> 853{ 854 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 855 bool operator()(const _Tp& __x, const _Tp& __y) const 856 {return __x || __y;} 857}; 858 859#if _LIBCPP_STD_VER > 11 860template <> 861struct _LIBCPP_TEMPLATE_VIS logical_or<void> 862{ 863 template <class _T1, class _T2> 864 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 865 auto operator()(_T1&& __t, _T2&& __u) const 866 _NOEXCEPT_(noexcept(_VSTD::forward<_T1>(__t) || _VSTD::forward<_T2>(__u))) 867 -> decltype (_VSTD::forward<_T1>(__t) || _VSTD::forward<_T2>(__u)) 868 { return _VSTD::forward<_T1>(__t) || _VSTD::forward<_T2>(__u); } 869 typedef void is_transparent; 870}; 871#endif 872 873 874#if _LIBCPP_STD_VER > 11 875template <class _Tp = void> 876#else 877template <class _Tp> 878#endif 879struct _LIBCPP_TEMPLATE_VIS logical_not : unary_function<_Tp, bool> 880{ 881 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 882 bool operator()(const _Tp& __x) const 883 {return !__x;} 884}; 885 886#if _LIBCPP_STD_VER > 11 887template <> 888struct _LIBCPP_TEMPLATE_VIS logical_not<void> 889{ 890 template <class _Tp> 891 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 892 auto operator()(_Tp&& __x) const 893 _NOEXCEPT_(noexcept(!_VSTD::forward<_Tp>(__x))) 894 -> decltype (!_VSTD::forward<_Tp>(__x)) 895 { return !_VSTD::forward<_Tp>(__x); } 896 typedef void is_transparent; 897}; 898#endif 899 900 901#if _LIBCPP_STD_VER > 11 902template <class _Tp = void> 903#else 904template <class _Tp> 905#endif 906struct _LIBCPP_TEMPLATE_VIS bit_and : binary_function<_Tp, _Tp, _Tp> 907{ 908 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 909 _Tp operator()(const _Tp& __x, const _Tp& __y) const 910 {return __x & __y;} 911}; 912 913#if _LIBCPP_STD_VER > 11 914template <> 915struct _LIBCPP_TEMPLATE_VIS bit_and<void> 916{ 917 template <class _T1, class _T2> 918 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 919 auto operator()(_T1&& __t, _T2&& __u) const 920 _NOEXCEPT_(noexcept(_VSTD::forward<_T1>(__t) & _VSTD::forward<_T2>(__u))) 921 -> decltype (_VSTD::forward<_T1>(__t) & _VSTD::forward<_T2>(__u)) 922 { return _VSTD::forward<_T1>(__t) & _VSTD::forward<_T2>(__u); } 923 typedef void is_transparent; 924}; 925#endif 926 927 928#if _LIBCPP_STD_VER > 11 929template <class _Tp = void> 930#else 931template <class _Tp> 932#endif 933struct _LIBCPP_TEMPLATE_VIS bit_or : binary_function<_Tp, _Tp, _Tp> 934{ 935 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 936 _Tp operator()(const _Tp& __x, const _Tp& __y) const 937 {return __x | __y;} 938}; 939 940#if _LIBCPP_STD_VER > 11 941template <> 942struct _LIBCPP_TEMPLATE_VIS bit_or<void> 943{ 944 template <class _T1, class _T2> 945 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 946 auto operator()(_T1&& __t, _T2&& __u) const 947 _NOEXCEPT_(noexcept(_VSTD::forward<_T1>(__t) | _VSTD::forward<_T2>(__u))) 948 -> decltype (_VSTD::forward<_T1>(__t) | _VSTD::forward<_T2>(__u)) 949 { return _VSTD::forward<_T1>(__t) | _VSTD::forward<_T2>(__u); } 950 typedef void is_transparent; 951}; 952#endif 953 954 955#if _LIBCPP_STD_VER > 11 956template <class _Tp = void> 957#else 958template <class _Tp> 959#endif 960struct _LIBCPP_TEMPLATE_VIS bit_xor : binary_function<_Tp, _Tp, _Tp> 961{ 962 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 963 _Tp operator()(const _Tp& __x, const _Tp& __y) const 964 {return __x ^ __y;} 965}; 966 967#if _LIBCPP_STD_VER > 11 968template <> 969struct _LIBCPP_TEMPLATE_VIS bit_xor<void> 970{ 971 template <class _T1, class _T2> 972 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 973 auto operator()(_T1&& __t, _T2&& __u) const 974 _NOEXCEPT_(noexcept(_VSTD::forward<_T1>(__t) ^ _VSTD::forward<_T2>(__u))) 975 -> decltype (_VSTD::forward<_T1>(__t) ^ _VSTD::forward<_T2>(__u)) 976 { return _VSTD::forward<_T1>(__t) ^ _VSTD::forward<_T2>(__u); } 977 typedef void is_transparent; 978}; 979#endif 980 981 982#if _LIBCPP_STD_VER > 11 983template <class _Tp = void> 984struct _LIBCPP_TEMPLATE_VIS bit_not : unary_function<_Tp, _Tp> 985{ 986 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 987 _Tp operator()(const _Tp& __x) const 988 {return ~__x;} 989}; 990 991template <> 992struct _LIBCPP_TEMPLATE_VIS bit_not<void> 993{ 994 template <class _Tp> 995 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 996 auto operator()(_Tp&& __x) const 997 _NOEXCEPT_(noexcept(~_VSTD::forward<_Tp>(__x))) 998 -> decltype (~_VSTD::forward<_Tp>(__x)) 999 { return ~_VSTD::forward<_Tp>(__x); } 1000 typedef void is_transparent; 1001}; 1002#endif 1003 1004template <class _Predicate> 1005class _LIBCPP_TEMPLATE_VIS _LIBCPP_DEPRECATED_IN_CXX17 unary_negate 1006 : public unary_function<typename _Predicate::argument_type, bool> 1007{ 1008 _Predicate __pred_; 1009public: 1010 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 1011 explicit unary_negate(const _Predicate& __pred) 1012 : __pred_(__pred) {} 1013 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 1014 bool operator()(const typename _Predicate::argument_type& __x) const 1015 {return !__pred_(__x);} 1016}; 1017 1018template <class _Predicate> 1019_LIBCPP_DEPRECATED_IN_CXX17 inline _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 1020unary_negate<_Predicate> 1021not1(const _Predicate& __pred) {return unary_negate<_Predicate>(__pred);} 1022 1023template <class _Predicate> 1024class _LIBCPP_TEMPLATE_VIS _LIBCPP_DEPRECATED_IN_CXX17 binary_negate 1025 : public binary_function<typename _Predicate::first_argument_type, 1026 typename _Predicate::second_argument_type, 1027 bool> 1028{ 1029 _Predicate __pred_; 1030public: 1031 _LIBCPP_INLINE_VISIBILITY explicit _LIBCPP_CONSTEXPR_AFTER_CXX11 1032 binary_negate(const _Predicate& __pred) : __pred_(__pred) {} 1033 1034 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 1035 bool operator()(const typename _Predicate::first_argument_type& __x, 1036 const typename _Predicate::second_argument_type& __y) const 1037 {return !__pred_(__x, __y);} 1038}; 1039 1040template <class _Predicate> 1041_LIBCPP_DEPRECATED_IN_CXX17 inline _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 1042binary_negate<_Predicate> 1043not2(const _Predicate& __pred) {return binary_negate<_Predicate>(__pred);} 1044 1045#if _LIBCPP_STD_VER <= 14 || defined(_LIBCPP_ENABLE_CXX17_REMOVED_BINDERS) 1046template <class __Operation> 1047class _LIBCPP_TEMPLATE_VIS _LIBCPP_DEPRECATED_IN_CXX11 binder1st 1048 : public unary_function<typename __Operation::second_argument_type, 1049 typename __Operation::result_type> 1050{ 1051protected: 1052 __Operation op; 1053 typename __Operation::first_argument_type value; 1054public: 1055 _LIBCPP_INLINE_VISIBILITY binder1st(const __Operation& __x, 1056 const typename __Operation::first_argument_type __y) 1057 : op(__x), value(__y) {} 1058 _LIBCPP_INLINE_VISIBILITY typename __Operation::result_type operator() 1059 (typename __Operation::second_argument_type& __x) const 1060 {return op(value, __x);} 1061 _LIBCPP_INLINE_VISIBILITY typename __Operation::result_type operator() 1062 (const typename __Operation::second_argument_type& __x) const 1063 {return op(value, __x);} 1064}; 1065 1066template <class __Operation, class _Tp> 1067_LIBCPP_DEPRECATED_IN_CXX11 inline _LIBCPP_INLINE_VISIBILITY 1068binder1st<__Operation> 1069bind1st(const __Operation& __op, const _Tp& __x) 1070 {return binder1st<__Operation>(__op, __x);} 1071 1072template <class __Operation> 1073class _LIBCPP_TEMPLATE_VIS _LIBCPP_DEPRECATED_IN_CXX11 binder2nd 1074 : public unary_function<typename __Operation::first_argument_type, 1075 typename __Operation::result_type> 1076{ 1077protected: 1078 __Operation op; 1079 typename __Operation::second_argument_type value; 1080public: 1081 _LIBCPP_INLINE_VISIBILITY 1082 binder2nd(const __Operation& __x, const typename __Operation::second_argument_type __y) 1083 : op(__x), value(__y) {} 1084 _LIBCPP_INLINE_VISIBILITY typename __Operation::result_type operator() 1085 ( typename __Operation::first_argument_type& __x) const 1086 {return op(__x, value);} 1087 _LIBCPP_INLINE_VISIBILITY typename __Operation::result_type operator() 1088 (const typename __Operation::first_argument_type& __x) const 1089 {return op(__x, value);} 1090}; 1091 1092template <class __Operation, class _Tp> 1093_LIBCPP_DEPRECATED_IN_CXX11 inline _LIBCPP_INLINE_VISIBILITY 1094binder2nd<__Operation> 1095bind2nd(const __Operation& __op, const _Tp& __x) 1096 {return binder2nd<__Operation>(__op, __x);} 1097 1098template <class _Arg, class _Result> 1099class _LIBCPP_TEMPLATE_VIS _LIBCPP_DEPRECATED_IN_CXX11 pointer_to_unary_function 1100 : public unary_function<_Arg, _Result> 1101{ 1102 _Result (*__f_)(_Arg); 1103public: 1104 _LIBCPP_INLINE_VISIBILITY explicit pointer_to_unary_function(_Result (*__f)(_Arg)) 1105 : __f_(__f) {} 1106 _LIBCPP_INLINE_VISIBILITY _Result operator()(_Arg __x) const 1107 {return __f_(__x);} 1108}; 1109 1110template <class _Arg, class _Result> 1111_LIBCPP_DEPRECATED_IN_CXX11 inline _LIBCPP_INLINE_VISIBILITY 1112pointer_to_unary_function<_Arg,_Result> 1113ptr_fun(_Result (*__f)(_Arg)) 1114 {return pointer_to_unary_function<_Arg,_Result>(__f);} 1115 1116template <class _Arg1, class _Arg2, class _Result> 1117class _LIBCPP_TEMPLATE_VIS _LIBCPP_DEPRECATED_IN_CXX11 pointer_to_binary_function 1118 : public binary_function<_Arg1, _Arg2, _Result> 1119{ 1120 _Result (*__f_)(_Arg1, _Arg2); 1121public: 1122 _LIBCPP_INLINE_VISIBILITY explicit pointer_to_binary_function(_Result (*__f)(_Arg1, _Arg2)) 1123 : __f_(__f) {} 1124 _LIBCPP_INLINE_VISIBILITY _Result operator()(_Arg1 __x, _Arg2 __y) const 1125 {return __f_(__x, __y);} 1126}; 1127 1128template <class _Arg1, class _Arg2, class _Result> 1129_LIBCPP_DEPRECATED_IN_CXX11 inline _LIBCPP_INLINE_VISIBILITY 1130pointer_to_binary_function<_Arg1,_Arg2,_Result> 1131ptr_fun(_Result (*__f)(_Arg1,_Arg2)) 1132 {return pointer_to_binary_function<_Arg1,_Arg2,_Result>(__f);} 1133 1134template<class _Sp, class _Tp> 1135class _LIBCPP_TEMPLATE_VIS _LIBCPP_DEPRECATED_IN_CXX11 mem_fun_t 1136 : public unary_function<_Tp*, _Sp> 1137{ 1138 _Sp (_Tp::*__p_)(); 1139public: 1140 _LIBCPP_INLINE_VISIBILITY explicit mem_fun_t(_Sp (_Tp::*__p)()) 1141 : __p_(__p) {} 1142 _LIBCPP_INLINE_VISIBILITY _Sp operator()(_Tp* __p) const 1143 {return (__p->*__p_)();} 1144}; 1145 1146template<class _Sp, class _Tp, class _Ap> 1147class _LIBCPP_TEMPLATE_VIS _LIBCPP_DEPRECATED_IN_CXX11 mem_fun1_t 1148 : public binary_function<_Tp*, _Ap, _Sp> 1149{ 1150 _Sp (_Tp::*__p_)(_Ap); 1151public: 1152 _LIBCPP_INLINE_VISIBILITY explicit mem_fun1_t(_Sp (_Tp::*__p)(_Ap)) 1153 : __p_(__p) {} 1154 _LIBCPP_INLINE_VISIBILITY _Sp operator()(_Tp* __p, _Ap __x) const 1155 {return (__p->*__p_)(__x);} 1156}; 1157 1158template<class _Sp, class _Tp> 1159_LIBCPP_DEPRECATED_IN_CXX11 inline _LIBCPP_INLINE_VISIBILITY 1160mem_fun_t<_Sp,_Tp> 1161mem_fun(_Sp (_Tp::*__f)()) 1162 {return mem_fun_t<_Sp,_Tp>(__f);} 1163 1164template<class _Sp, class _Tp, class _Ap> 1165_LIBCPP_DEPRECATED_IN_CXX11 inline _LIBCPP_INLINE_VISIBILITY 1166mem_fun1_t<_Sp,_Tp,_Ap> 1167mem_fun(_Sp (_Tp::*__f)(_Ap)) 1168 {return mem_fun1_t<_Sp,_Tp,_Ap>(__f);} 1169 1170template<class _Sp, class _Tp> 1171class _LIBCPP_TEMPLATE_VIS _LIBCPP_DEPRECATED_IN_CXX11 mem_fun_ref_t 1172 : public unary_function<_Tp, _Sp> 1173{ 1174 _Sp (_Tp::*__p_)(); 1175public: 1176 _LIBCPP_INLINE_VISIBILITY explicit mem_fun_ref_t(_Sp (_Tp::*__p)()) 1177 : __p_(__p) {} 1178 _LIBCPP_INLINE_VISIBILITY _Sp operator()(_Tp& __p) const 1179 {return (__p.*__p_)();} 1180}; 1181 1182template<class _Sp, class _Tp, class _Ap> 1183class _LIBCPP_TEMPLATE_VIS _LIBCPP_DEPRECATED_IN_CXX11 mem_fun1_ref_t 1184 : public binary_function<_Tp, _Ap, _Sp> 1185{ 1186 _Sp (_Tp::*__p_)(_Ap); 1187public: 1188 _LIBCPP_INLINE_VISIBILITY explicit mem_fun1_ref_t(_Sp (_Tp::*__p)(_Ap)) 1189 : __p_(__p) {} 1190 _LIBCPP_INLINE_VISIBILITY _Sp operator()(_Tp& __p, _Ap __x) const 1191 {return (__p.*__p_)(__x);} 1192}; 1193 1194template<class _Sp, class _Tp> 1195_LIBCPP_DEPRECATED_IN_CXX11 inline _LIBCPP_INLINE_VISIBILITY 1196mem_fun_ref_t<_Sp,_Tp> 1197mem_fun_ref(_Sp (_Tp::*__f)()) 1198 {return mem_fun_ref_t<_Sp,_Tp>(__f);} 1199 1200template<class _Sp, class _Tp, class _Ap> 1201_LIBCPP_DEPRECATED_IN_CXX11 inline _LIBCPP_INLINE_VISIBILITY 1202mem_fun1_ref_t<_Sp,_Tp,_Ap> 1203mem_fun_ref(_Sp (_Tp::*__f)(_Ap)) 1204 {return mem_fun1_ref_t<_Sp,_Tp,_Ap>(__f);} 1205 1206template <class _Sp, class _Tp> 1207class _LIBCPP_TEMPLATE_VIS _LIBCPP_DEPRECATED_IN_CXX11 const_mem_fun_t 1208 : public unary_function<const _Tp*, _Sp> 1209{ 1210 _Sp (_Tp::*__p_)() const; 1211public: 1212 _LIBCPP_INLINE_VISIBILITY explicit const_mem_fun_t(_Sp (_Tp::*__p)() const) 1213 : __p_(__p) {} 1214 _LIBCPP_INLINE_VISIBILITY _Sp operator()(const _Tp* __p) const 1215 {return (__p->*__p_)();} 1216}; 1217 1218template <class _Sp, class _Tp, class _Ap> 1219class _LIBCPP_TEMPLATE_VIS _LIBCPP_DEPRECATED_IN_CXX11 const_mem_fun1_t 1220 : public binary_function<const _Tp*, _Ap, _Sp> 1221{ 1222 _Sp (_Tp::*__p_)(_Ap) const; 1223public: 1224 _LIBCPP_INLINE_VISIBILITY explicit const_mem_fun1_t(_Sp (_Tp::*__p)(_Ap) const) 1225 : __p_(__p) {} 1226 _LIBCPP_INLINE_VISIBILITY _Sp operator()(const _Tp* __p, _Ap __x) const 1227 {return (__p->*__p_)(__x);} 1228}; 1229 1230template <class _Sp, class _Tp> 1231_LIBCPP_DEPRECATED_IN_CXX11 inline _LIBCPP_INLINE_VISIBILITY 1232const_mem_fun_t<_Sp,_Tp> 1233mem_fun(_Sp (_Tp::*__f)() const) 1234 {return const_mem_fun_t<_Sp,_Tp>(__f);} 1235 1236template <class _Sp, class _Tp, class _Ap> 1237_LIBCPP_DEPRECATED_IN_CXX11 inline _LIBCPP_INLINE_VISIBILITY 1238const_mem_fun1_t<_Sp,_Tp,_Ap> 1239mem_fun(_Sp (_Tp::*__f)(_Ap) const) 1240 {return const_mem_fun1_t<_Sp,_Tp,_Ap>(__f);} 1241 1242template <class _Sp, class _Tp> 1243class _LIBCPP_TEMPLATE_VIS _LIBCPP_DEPRECATED_IN_CXX11 const_mem_fun_ref_t 1244 : public unary_function<_Tp, _Sp> 1245{ 1246 _Sp (_Tp::*__p_)() const; 1247public: 1248 _LIBCPP_INLINE_VISIBILITY explicit const_mem_fun_ref_t(_Sp (_Tp::*__p)() const) 1249 : __p_(__p) {} 1250 _LIBCPP_INLINE_VISIBILITY _Sp operator()(const _Tp& __p) const 1251 {return (__p.*__p_)();} 1252}; 1253 1254template <class _Sp, class _Tp, class _Ap> 1255class _LIBCPP_TEMPLATE_VIS _LIBCPP_DEPRECATED_IN_CXX11 const_mem_fun1_ref_t 1256 : public binary_function<_Tp, _Ap, _Sp> 1257{ 1258 _Sp (_Tp::*__p_)(_Ap) const; 1259public: 1260 _LIBCPP_INLINE_VISIBILITY explicit const_mem_fun1_ref_t(_Sp (_Tp::*__p)(_Ap) const) 1261 : __p_(__p) {} 1262 _LIBCPP_INLINE_VISIBILITY _Sp operator()(const _Tp& __p, _Ap __x) const 1263 {return (__p.*__p_)(__x);} 1264}; 1265 1266template <class _Sp, class _Tp> 1267_LIBCPP_DEPRECATED_IN_CXX11 inline _LIBCPP_INLINE_VISIBILITY 1268const_mem_fun_ref_t<_Sp,_Tp> 1269mem_fun_ref(_Sp (_Tp::*__f)() const) 1270 {return const_mem_fun_ref_t<_Sp,_Tp>(__f);} 1271 1272template <class _Sp, class _Tp, class _Ap> 1273_LIBCPP_DEPRECATED_IN_CXX11 inline _LIBCPP_INLINE_VISIBILITY 1274const_mem_fun1_ref_t<_Sp,_Tp,_Ap> 1275mem_fun_ref(_Sp (_Tp::*__f)(_Ap) const) 1276 {return const_mem_fun1_ref_t<_Sp,_Tp,_Ap>(__f);} 1277#endif 1278 1279//////////////////////////////////////////////////////////////////////////////// 1280// MEMFUN 1281//============================================================================== 1282 1283template <class _Tp> 1284class __mem_fn 1285 : public __weak_result_type<_Tp> 1286{ 1287public: 1288 // types 1289 typedef _Tp type; 1290private: 1291 type __f_; 1292 1293public: 1294 _LIBCPP_INLINE_VISIBILITY __mem_fn(type __f) _NOEXCEPT : __f_(__f) {} 1295 1296#ifndef _LIBCPP_CXX03_LANG 1297 // invoke 1298 template <class... _ArgTypes> 1299 _LIBCPP_INLINE_VISIBILITY 1300 typename __invoke_return<type, _ArgTypes...>::type 1301 operator() (_ArgTypes&&... __args) const { 1302 return __invoke(__f_, _VSTD::forward<_ArgTypes>(__args)...); 1303 } 1304#else 1305 1306 template <class _A0> 1307 _LIBCPP_INLINE_VISIBILITY 1308 typename __invoke_return0<type, _A0>::type 1309 operator() (_A0& __a0) const { 1310 return __invoke(__f_, __a0); 1311 } 1312 1313 template <class _A0> 1314 _LIBCPP_INLINE_VISIBILITY 1315 typename __invoke_return0<type, _A0 const>::type 1316 operator() (_A0 const& __a0) const { 1317 return __invoke(__f_, __a0); 1318 } 1319 1320 template <class _A0, class _A1> 1321 _LIBCPP_INLINE_VISIBILITY 1322 typename __invoke_return1<type, _A0, _A1>::type 1323 operator() (_A0& __a0, _A1& __a1) const { 1324 return __invoke(__f_, __a0, __a1); 1325 } 1326 1327 template <class _A0, class _A1> 1328 _LIBCPP_INLINE_VISIBILITY 1329 typename __invoke_return1<type, _A0 const, _A1>::type 1330 operator() (_A0 const& __a0, _A1& __a1) const { 1331 return __invoke(__f_, __a0, __a1); 1332 } 1333 1334 template <class _A0, class _A1> 1335 _LIBCPP_INLINE_VISIBILITY 1336 typename __invoke_return1<type, _A0, _A1 const>::type 1337 operator() (_A0& __a0, _A1 const& __a1) const { 1338 return __invoke(__f_, __a0, __a1); 1339 } 1340 1341 template <class _A0, class _A1> 1342 _LIBCPP_INLINE_VISIBILITY 1343 typename __invoke_return1<type, _A0 const, _A1 const>::type 1344 operator() (_A0 const& __a0, _A1 const& __a1) const { 1345 return __invoke(__f_, __a0, __a1); 1346 } 1347 1348 template <class _A0, class _A1, class _A2> 1349 _LIBCPP_INLINE_VISIBILITY 1350 typename __invoke_return2<type, _A0, _A1, _A2>::type 1351 operator() (_A0& __a0, _A1& __a1, _A2& __a2) const { 1352 return __invoke(__f_, __a0, __a1, __a2); 1353 } 1354 1355 template <class _A0, class _A1, class _A2> 1356 _LIBCPP_INLINE_VISIBILITY 1357 typename __invoke_return2<type, _A0 const, _A1, _A2>::type 1358 operator() (_A0 const& __a0, _A1& __a1, _A2& __a2) const { 1359 return __invoke(__f_, __a0, __a1, __a2); 1360 } 1361 1362 template <class _A0, class _A1, class _A2> 1363 _LIBCPP_INLINE_VISIBILITY 1364 typename __invoke_return2<type, _A0, _A1 const, _A2>::type 1365 operator() (_A0& __a0, _A1 const& __a1, _A2& __a2) const { 1366 return __invoke(__f_, __a0, __a1, __a2); 1367 } 1368 1369 template <class _A0, class _A1, class _A2> 1370 _LIBCPP_INLINE_VISIBILITY 1371 typename __invoke_return2<type, _A0, _A1, _A2 const>::type 1372 operator() (_A0& __a0, _A1& __a1, _A2 const& __a2) const { 1373 return __invoke(__f_, __a0, __a1, __a2); 1374 } 1375 1376 template <class _A0, class _A1, class _A2> 1377 _LIBCPP_INLINE_VISIBILITY 1378 typename __invoke_return2<type, _A0 const, _A1 const, _A2>::type 1379 operator() (_A0 const& __a0, _A1 const& __a1, _A2& __a2) const { 1380 return __invoke(__f_, __a0, __a1, __a2); 1381 } 1382 1383 template <class _A0, class _A1, class _A2> 1384 _LIBCPP_INLINE_VISIBILITY 1385 typename __invoke_return2<type, _A0 const, _A1, _A2 const>::type 1386 operator() (_A0 const& __a0, _A1& __a1, _A2 const& __a2) const { 1387 return __invoke(__f_, __a0, __a1, __a2); 1388 } 1389 1390 template <class _A0, class _A1, class _A2> 1391 _LIBCPP_INLINE_VISIBILITY 1392 typename __invoke_return2<type, _A0, _A1 const, _A2 const>::type 1393 operator() (_A0& __a0, _A1 const& __a1, _A2 const& __a2) const { 1394 return __invoke(__f_, __a0, __a1, __a2); 1395 } 1396 1397 template <class _A0, class _A1, class _A2> 1398 _LIBCPP_INLINE_VISIBILITY 1399 typename __invoke_return2<type, _A0 const, _A1 const, _A2 const>::type 1400 operator() (_A0 const& __a0, _A1 const& __a1, _A2 const& __a2) const { 1401 return __invoke(__f_, __a0, __a1, __a2); 1402 } 1403#endif 1404}; 1405 1406template<class _Rp, class _Tp> 1407inline _LIBCPP_INLINE_VISIBILITY 1408__mem_fn<_Rp _Tp::*> 1409mem_fn(_Rp _Tp::* __pm) _NOEXCEPT 1410{ 1411 return __mem_fn<_Rp _Tp::*>(__pm); 1412} 1413 1414//////////////////////////////////////////////////////////////////////////////// 1415// FUNCTION 1416//============================================================================== 1417 1418// bad_function_call 1419 1420class _LIBCPP_EXCEPTION_ABI bad_function_call 1421 : public exception 1422{ 1423#ifdef _LIBCPP_ABI_BAD_FUNCTION_CALL_KEY_FUNCTION 1424public: 1425 virtual ~bad_function_call() _NOEXCEPT; 1426 1427 virtual const char* what() const _NOEXCEPT; 1428#endif 1429}; 1430 1431_LIBCPP_NORETURN inline _LIBCPP_INLINE_VISIBILITY 1432void __throw_bad_function_call() 1433{ 1434#ifndef _LIBCPP_NO_EXCEPTIONS 1435 throw bad_function_call(); 1436#else 1437 _VSTD::abort(); 1438#endif 1439} 1440 1441#if defined(_LIBCPP_CXX03_LANG) && !defined(_LIBCPP_DISABLE_DEPRECATION_WARNINGS) && __has_attribute(deprecated) 1442# define _LIBCPP_DEPRECATED_CXX03_FUNCTION \ 1443 __attribute__((deprecated("Using std::function in C++03 is not supported anymore. Please upgrade to C++11 or later, or use a different type"))) 1444#else 1445# define _LIBCPP_DEPRECATED_CXX03_FUNCTION /* nothing */ 1446#endif 1447 1448template<class _Fp> class _LIBCPP_DEPRECATED_CXX03_FUNCTION _LIBCPP_TEMPLATE_VIS function; // undefined 1449 1450namespace __function 1451{ 1452 1453template<class _Rp> 1454struct __maybe_derive_from_unary_function 1455{ 1456}; 1457 1458template<class _Rp, class _A1> 1459struct __maybe_derive_from_unary_function<_Rp(_A1)> 1460 : public unary_function<_A1, _Rp> 1461{ 1462}; 1463 1464template<class _Rp> 1465struct __maybe_derive_from_binary_function 1466{ 1467}; 1468 1469template<class _Rp, class _A1, class _A2> 1470struct __maybe_derive_from_binary_function<_Rp(_A1, _A2)> 1471 : public binary_function<_A1, _A2, _Rp> 1472{ 1473}; 1474 1475template <class _Fp> 1476_LIBCPP_INLINE_VISIBILITY 1477bool __not_null(_Fp const&) { return true; } 1478 1479template <class _Fp> 1480_LIBCPP_INLINE_VISIBILITY 1481bool __not_null(_Fp* __ptr) { return __ptr; } 1482 1483template <class _Ret, class _Class> 1484_LIBCPP_INLINE_VISIBILITY 1485bool __not_null(_Ret _Class::*__ptr) { return __ptr; } 1486 1487template <class _Fp> 1488_LIBCPP_INLINE_VISIBILITY 1489bool __not_null(function<_Fp> const& __f) { return !!__f; } 1490 1491#ifdef _LIBCPP_HAS_EXTENSION_BLOCKS 1492template <class _Rp, class ..._Args> 1493_LIBCPP_INLINE_VISIBILITY 1494bool __not_null(_Rp (^__p)(_Args...)) { return __p; } 1495#endif 1496 1497} // namespace __function 1498 1499#ifndef _LIBCPP_CXX03_LANG 1500 1501namespace __function { 1502 1503// __alloc_func holds a functor and an allocator. 1504 1505template <class _Fp, class _Ap, class _FB> class __alloc_func; 1506template <class _Fp, class _FB> 1507class __default_alloc_func; 1508 1509template <class _Fp, class _Ap, class _Rp, class... _ArgTypes> 1510class __alloc_func<_Fp, _Ap, _Rp(_ArgTypes...)> 1511{ 1512 __compressed_pair<_Fp, _Ap> __f_; 1513 1514 public: 1515 typedef _LIBCPP_NODEBUG_TYPE _Fp _Target; 1516 typedef _LIBCPP_NODEBUG_TYPE _Ap _Alloc; 1517 1518 _LIBCPP_INLINE_VISIBILITY 1519 const _Target& __target() const { return __f_.first(); } 1520 1521 // WIN32 APIs may define __allocator, so use __get_allocator instead. 1522 _LIBCPP_INLINE_VISIBILITY 1523 const _Alloc& __get_allocator() const { return __f_.second(); } 1524 1525 _LIBCPP_INLINE_VISIBILITY 1526 explicit __alloc_func(_Target&& __f) 1527 : __f_(piecewise_construct, _VSTD::forward_as_tuple(_VSTD::move(__f)), 1528 _VSTD::forward_as_tuple()) 1529 { 1530 } 1531 1532 _LIBCPP_INLINE_VISIBILITY 1533 explicit __alloc_func(const _Target& __f, const _Alloc& __a) 1534 : __f_(piecewise_construct, _VSTD::forward_as_tuple(__f), 1535 _VSTD::forward_as_tuple(__a)) 1536 { 1537 } 1538 1539 _LIBCPP_INLINE_VISIBILITY 1540 explicit __alloc_func(const _Target& __f, _Alloc&& __a) 1541 : __f_(piecewise_construct, _VSTD::forward_as_tuple(__f), 1542 _VSTD::forward_as_tuple(_VSTD::move(__a))) 1543 { 1544 } 1545 1546 _LIBCPP_INLINE_VISIBILITY 1547 explicit __alloc_func(_Target&& __f, _Alloc&& __a) 1548 : __f_(piecewise_construct, _VSTD::forward_as_tuple(_VSTD::move(__f)), 1549 _VSTD::forward_as_tuple(_VSTD::move(__a))) 1550 { 1551 } 1552 1553 _LIBCPP_INLINE_VISIBILITY 1554 _Rp operator()(_ArgTypes&&... __arg) 1555 { 1556 typedef __invoke_void_return_wrapper<_Rp> _Invoker; 1557 return _Invoker::__call(__f_.first(), 1558 _VSTD::forward<_ArgTypes>(__arg)...); 1559 } 1560 1561 _LIBCPP_INLINE_VISIBILITY 1562 __alloc_func* __clone() const 1563 { 1564 typedef allocator_traits<_Alloc> __alloc_traits; 1565 typedef 1566 typename __rebind_alloc_helper<__alloc_traits, __alloc_func>::type 1567 _AA; 1568 _AA __a(__f_.second()); 1569 typedef __allocator_destructor<_AA> _Dp; 1570 unique_ptr<__alloc_func, _Dp> __hold(__a.allocate(1), _Dp(__a, 1)); 1571 ::new ((void*)__hold.get()) __alloc_func(__f_.first(), _Alloc(__a)); 1572 return __hold.release(); 1573 } 1574 1575 _LIBCPP_INLINE_VISIBILITY 1576 void destroy() _NOEXCEPT { __f_.~__compressed_pair<_Target, _Alloc>(); } 1577 1578 static void __destroy_and_delete(__alloc_func* __f) { 1579 typedef allocator_traits<_Alloc> __alloc_traits; 1580 typedef typename __rebind_alloc_helper<__alloc_traits, __alloc_func>::type 1581 _FunAlloc; 1582 _FunAlloc __a(__f->__get_allocator()); 1583 __f->destroy(); 1584 __a.deallocate(__f, 1); 1585 } 1586}; 1587 1588template <class _Fp, class _Rp, class... _ArgTypes> 1589class __default_alloc_func<_Fp, _Rp(_ArgTypes...)> { 1590 _Fp __f_; 1591 1592public: 1593 typedef _LIBCPP_NODEBUG_TYPE _Fp _Target; 1594 1595 _LIBCPP_INLINE_VISIBILITY 1596 const _Target& __target() const { return __f_; } 1597 1598 _LIBCPP_INLINE_VISIBILITY 1599 explicit __default_alloc_func(_Target&& __f) : __f_(std::move(__f)) {} 1600 1601 _LIBCPP_INLINE_VISIBILITY 1602 explicit __default_alloc_func(const _Target& __f) : __f_(__f) {} 1603 1604 _LIBCPP_INLINE_VISIBILITY 1605 _Rp operator()(_ArgTypes&&... __arg) { 1606 typedef __invoke_void_return_wrapper<_Rp> _Invoker; 1607 return _Invoker::__call(__f_, _VSTD::forward<_ArgTypes>(__arg)...); 1608 } 1609 1610 _LIBCPP_INLINE_VISIBILITY 1611 __default_alloc_func* __clone() const { 1612 __builtin_new_allocator::__holder_t __hold = 1613 __builtin_new_allocator::__allocate_type<__default_alloc_func>(1); 1614 __default_alloc_func* __res = 1615 ::new (__hold.get()) __default_alloc_func(__f_); 1616 (void)__hold.release(); 1617 return __res; 1618 } 1619 1620 _LIBCPP_INLINE_VISIBILITY 1621 void destroy() _NOEXCEPT { __f_.~_Target(); } 1622 1623 static void __destroy_and_delete(__default_alloc_func* __f) { 1624 __f->destroy(); 1625 __builtin_new_allocator::__deallocate_type<__default_alloc_func>(__f, 1); 1626 } 1627}; 1628 1629// __base provides an abstract interface for copyable functors. 1630 1631template<class _Fp> class _LIBCPP_TEMPLATE_VIS __base; 1632 1633template<class _Rp, class ..._ArgTypes> 1634class __base<_Rp(_ArgTypes...)> 1635{ 1636 __base(const __base&); 1637 __base& operator=(const __base&); 1638public: 1639 _LIBCPP_INLINE_VISIBILITY __base() {} 1640 _LIBCPP_INLINE_VISIBILITY virtual ~__base() {} 1641 virtual __base* __clone() const = 0; 1642 virtual void __clone(__base*) const = 0; 1643 virtual void destroy() _NOEXCEPT = 0; 1644 virtual void destroy_deallocate() _NOEXCEPT = 0; 1645 virtual _Rp operator()(_ArgTypes&& ...) = 0; 1646#ifndef _LIBCPP_NO_RTTI 1647 virtual const void* target(const type_info&) const _NOEXCEPT = 0; 1648 virtual const std::type_info& target_type() const _NOEXCEPT = 0; 1649#endif // _LIBCPP_NO_RTTI 1650}; 1651 1652// __func implements __base for a given functor type. 1653 1654template<class _FD, class _Alloc, class _FB> class __func; 1655 1656template<class _Fp, class _Alloc, class _Rp, class ..._ArgTypes> 1657class __func<_Fp, _Alloc, _Rp(_ArgTypes...)> 1658 : public __base<_Rp(_ArgTypes...)> 1659{ 1660 __alloc_func<_Fp, _Alloc, _Rp(_ArgTypes...)> __f_; 1661public: 1662 _LIBCPP_INLINE_VISIBILITY 1663 explicit __func(_Fp&& __f) 1664 : __f_(_VSTD::move(__f)) {} 1665 1666 _LIBCPP_INLINE_VISIBILITY 1667 explicit __func(const _Fp& __f, const _Alloc& __a) 1668 : __f_(__f, __a) {} 1669 1670 _LIBCPP_INLINE_VISIBILITY 1671 explicit __func(const _Fp& __f, _Alloc&& __a) 1672 : __f_(__f, _VSTD::move(__a)) {} 1673 1674 _LIBCPP_INLINE_VISIBILITY 1675 explicit __func(_Fp&& __f, _Alloc&& __a) 1676 : __f_(_VSTD::move(__f), _VSTD::move(__a)) {} 1677 1678 virtual __base<_Rp(_ArgTypes...)>* __clone() const; 1679 virtual void __clone(__base<_Rp(_ArgTypes...)>*) const; 1680 virtual void destroy() _NOEXCEPT; 1681 virtual void destroy_deallocate() _NOEXCEPT; 1682 virtual _Rp operator()(_ArgTypes&&... __arg); 1683#ifndef _LIBCPP_NO_RTTI 1684 virtual const void* target(const type_info&) const _NOEXCEPT; 1685 virtual const std::type_info& target_type() const _NOEXCEPT; 1686#endif // _LIBCPP_NO_RTTI 1687}; 1688 1689template<class _Fp, class _Alloc, class _Rp, class ..._ArgTypes> 1690__base<_Rp(_ArgTypes...)>* 1691__func<_Fp, _Alloc, _Rp(_ArgTypes...)>::__clone() const 1692{ 1693 typedef allocator_traits<_Alloc> __alloc_traits; 1694 typedef typename __rebind_alloc_helper<__alloc_traits, __func>::type _Ap; 1695 _Ap __a(__f_.__get_allocator()); 1696 typedef __allocator_destructor<_Ap> _Dp; 1697 unique_ptr<__func, _Dp> __hold(__a.allocate(1), _Dp(__a, 1)); 1698 ::new ((void*)__hold.get()) __func(__f_.__target(), _Alloc(__a)); 1699 return __hold.release(); 1700} 1701 1702template<class _Fp, class _Alloc, class _Rp, class ..._ArgTypes> 1703void 1704__func<_Fp, _Alloc, _Rp(_ArgTypes...)>::__clone(__base<_Rp(_ArgTypes...)>* __p) const 1705{ 1706 ::new (__p) __func(__f_.__target(), __f_.__get_allocator()); 1707} 1708 1709template<class _Fp, class _Alloc, class _Rp, class ..._ArgTypes> 1710void 1711__func<_Fp, _Alloc, _Rp(_ArgTypes...)>::destroy() _NOEXCEPT 1712{ 1713 __f_.destroy(); 1714} 1715 1716template<class _Fp, class _Alloc, class _Rp, class ..._ArgTypes> 1717void 1718__func<_Fp, _Alloc, _Rp(_ArgTypes...)>::destroy_deallocate() _NOEXCEPT 1719{ 1720 typedef allocator_traits<_Alloc> __alloc_traits; 1721 typedef typename __rebind_alloc_helper<__alloc_traits, __func>::type _Ap; 1722 _Ap __a(__f_.__get_allocator()); 1723 __f_.destroy(); 1724 __a.deallocate(this, 1); 1725} 1726 1727template<class _Fp, class _Alloc, class _Rp, class ..._ArgTypes> 1728_Rp 1729__func<_Fp, _Alloc, _Rp(_ArgTypes...)>::operator()(_ArgTypes&& ... __arg) 1730{ 1731 return __f_(_VSTD::forward<_ArgTypes>(__arg)...); 1732} 1733 1734#ifndef _LIBCPP_NO_RTTI 1735 1736template<class _Fp, class _Alloc, class _Rp, class ..._ArgTypes> 1737const void* 1738__func<_Fp, _Alloc, _Rp(_ArgTypes...)>::target(const type_info& __ti) const _NOEXCEPT 1739{ 1740 if (__ti == typeid(_Fp)) 1741 return &__f_.__target(); 1742 return (const void*)0; 1743} 1744 1745template<class _Fp, class _Alloc, class _Rp, class ..._ArgTypes> 1746const std::type_info& 1747__func<_Fp, _Alloc, _Rp(_ArgTypes...)>::target_type() const _NOEXCEPT 1748{ 1749 return typeid(_Fp); 1750} 1751 1752#endif // _LIBCPP_NO_RTTI 1753 1754// __value_func creates a value-type from a __func. 1755 1756template <class _Fp> class __value_func; 1757 1758template <class _Rp, class... _ArgTypes> class __value_func<_Rp(_ArgTypes...)> 1759{ 1760 typename aligned_storage<3 * sizeof(void*)>::type __buf_; 1761 1762 typedef __base<_Rp(_ArgTypes...)> __func; 1763 __func* __f_; 1764 1765 _LIBCPP_NO_CFI static __func* __as_base(void* p) 1766 { 1767 return reinterpret_cast<__func*>(p); 1768 } 1769 1770 public: 1771 _LIBCPP_INLINE_VISIBILITY 1772 __value_func() _NOEXCEPT : __f_(0) {} 1773 1774 template <class _Fp, class _Alloc> 1775 _LIBCPP_INLINE_VISIBILITY __value_func(_Fp&& __f, const _Alloc& __a) 1776 : __f_(0) 1777 { 1778 typedef allocator_traits<_Alloc> __alloc_traits; 1779 typedef __function::__func<_Fp, _Alloc, _Rp(_ArgTypes...)> _Fun; 1780 typedef typename __rebind_alloc_helper<__alloc_traits, _Fun>::type 1781 _FunAlloc; 1782 1783 if (__function::__not_null(__f)) 1784 { 1785 _FunAlloc __af(__a); 1786 if (sizeof(_Fun) <= sizeof(__buf_) && 1787 is_nothrow_copy_constructible<_Fp>::value && 1788 is_nothrow_copy_constructible<_FunAlloc>::value) 1789 { 1790 __f_ = 1791 ::new ((void*)&__buf_) _Fun(_VSTD::move(__f), _Alloc(__af)); 1792 } 1793 else 1794 { 1795 typedef __allocator_destructor<_FunAlloc> _Dp; 1796 unique_ptr<__func, _Dp> __hold(__af.allocate(1), _Dp(__af, 1)); 1797 ::new ((void*)__hold.get()) _Fun(_VSTD::move(__f), _Alloc(__a)); 1798 __f_ = __hold.release(); 1799 } 1800 } 1801 } 1802 1803 template <class _Fp, 1804 class = typename enable_if<!is_same<typename decay<_Fp>::type, __value_func>::value>::type> 1805 _LIBCPP_INLINE_VISIBILITY explicit __value_func(_Fp&& __f) 1806 : __value_func(std::forward<_Fp>(__f), allocator<_Fp>()) {} 1807 1808 _LIBCPP_INLINE_VISIBILITY 1809 __value_func(const __value_func& __f) 1810 { 1811 if (__f.__f_ == 0) 1812 __f_ = 0; 1813 else if ((void*)__f.__f_ == &__f.__buf_) 1814 { 1815 __f_ = __as_base(&__buf_); 1816 __f.__f_->__clone(__f_); 1817 } 1818 else 1819 __f_ = __f.__f_->__clone(); 1820 } 1821 1822 _LIBCPP_INLINE_VISIBILITY 1823 __value_func(__value_func&& __f) _NOEXCEPT 1824 { 1825 if (__f.__f_ == 0) 1826 __f_ = 0; 1827 else if ((void*)__f.__f_ == &__f.__buf_) 1828 { 1829 __f_ = __as_base(&__buf_); 1830 __f.__f_->__clone(__f_); 1831 } 1832 else 1833 { 1834 __f_ = __f.__f_; 1835 __f.__f_ = 0; 1836 } 1837 } 1838 1839 _LIBCPP_INLINE_VISIBILITY 1840 ~__value_func() 1841 { 1842 if ((void*)__f_ == &__buf_) 1843 __f_->destroy(); 1844 else if (__f_) 1845 __f_->destroy_deallocate(); 1846 } 1847 1848 _LIBCPP_INLINE_VISIBILITY 1849 __value_func& operator=(__value_func&& __f) 1850 { 1851 *this = nullptr; 1852 if (__f.__f_ == 0) 1853 __f_ = 0; 1854 else if ((void*)__f.__f_ == &__f.__buf_) 1855 { 1856 __f_ = __as_base(&__buf_); 1857 __f.__f_->__clone(__f_); 1858 } 1859 else 1860 { 1861 __f_ = __f.__f_; 1862 __f.__f_ = 0; 1863 } 1864 return *this; 1865 } 1866 1867 _LIBCPP_INLINE_VISIBILITY 1868 __value_func& operator=(nullptr_t) 1869 { 1870 __func* __f = __f_; 1871 __f_ = 0; 1872 if ((void*)__f == &__buf_) 1873 __f->destroy(); 1874 else if (__f) 1875 __f->destroy_deallocate(); 1876 return *this; 1877 } 1878 1879 _LIBCPP_INLINE_VISIBILITY 1880 _Rp operator()(_ArgTypes&&... __args) const 1881 { 1882 if (__f_ == 0) 1883 __throw_bad_function_call(); 1884 return (*__f_)(_VSTD::forward<_ArgTypes>(__args)...); 1885 } 1886 1887 _LIBCPP_INLINE_VISIBILITY 1888 void swap(__value_func& __f) _NOEXCEPT 1889 { 1890 if (&__f == this) 1891 return; 1892 if ((void*)__f_ == &__buf_ && (void*)__f.__f_ == &__f.__buf_) 1893 { 1894 typename aligned_storage<sizeof(__buf_)>::type __tempbuf; 1895 __func* __t = __as_base(&__tempbuf); 1896 __f_->__clone(__t); 1897 __f_->destroy(); 1898 __f_ = 0; 1899 __f.__f_->__clone(__as_base(&__buf_)); 1900 __f.__f_->destroy(); 1901 __f.__f_ = 0; 1902 __f_ = __as_base(&__buf_); 1903 __t->__clone(__as_base(&__f.__buf_)); 1904 __t->destroy(); 1905 __f.__f_ = __as_base(&__f.__buf_); 1906 } 1907 else if ((void*)__f_ == &__buf_) 1908 { 1909 __f_->__clone(__as_base(&__f.__buf_)); 1910 __f_->destroy(); 1911 __f_ = __f.__f_; 1912 __f.__f_ = __as_base(&__f.__buf_); 1913 } 1914 else if ((void*)__f.__f_ == &__f.__buf_) 1915 { 1916 __f.__f_->__clone(__as_base(&__buf_)); 1917 __f.__f_->destroy(); 1918 __f.__f_ = __f_; 1919 __f_ = __as_base(&__buf_); 1920 } 1921 else 1922 _VSTD::swap(__f_, __f.__f_); 1923 } 1924 1925 _LIBCPP_INLINE_VISIBILITY 1926 _LIBCPP_EXPLICIT operator bool() const _NOEXCEPT { return __f_ != 0; } 1927 1928#ifndef _LIBCPP_NO_RTTI 1929 _LIBCPP_INLINE_VISIBILITY 1930 const std::type_info& target_type() const _NOEXCEPT 1931 { 1932 if (__f_ == 0) 1933 return typeid(void); 1934 return __f_->target_type(); 1935 } 1936 1937 template <typename _Tp> 1938 _LIBCPP_INLINE_VISIBILITY const _Tp* target() const _NOEXCEPT 1939 { 1940 if (__f_ == 0) 1941 return 0; 1942 return (const _Tp*)__f_->target(typeid(_Tp)); 1943 } 1944#endif // _LIBCPP_NO_RTTI 1945}; 1946 1947// Storage for a functor object, to be used with __policy to manage copy and 1948// destruction. 1949union __policy_storage 1950{ 1951 mutable char __small[sizeof(void*) * 2]; 1952 void* __large; 1953}; 1954 1955// True if _Fun can safely be held in __policy_storage.__small. 1956template <typename _Fun> 1957struct __use_small_storage 1958 : public _VSTD::integral_constant< 1959 bool, sizeof(_Fun) <= sizeof(__policy_storage) && 1960 _LIBCPP_ALIGNOF(_Fun) <= _LIBCPP_ALIGNOF(__policy_storage) && 1961 _VSTD::is_trivially_copy_constructible<_Fun>::value && 1962 _VSTD::is_trivially_destructible<_Fun>::value> {}; 1963 1964// Policy contains information about how to copy, destroy, and move the 1965// underlying functor. You can think of it as a vtable of sorts. 1966struct __policy 1967{ 1968 // Used to copy or destroy __large values. null for trivial objects. 1969 void* (*const __clone)(const void*); 1970 void (*const __destroy)(void*); 1971 1972 // True if this is the null policy (no value). 1973 const bool __is_null; 1974 1975 // The target type. May be null if RTTI is disabled. 1976 const std::type_info* const __type_info; 1977 1978 // Returns a pointer to a static policy object suitable for the functor 1979 // type. 1980 template <typename _Fun> 1981 _LIBCPP_INLINE_VISIBILITY static const __policy* __create() 1982 { 1983 return __choose_policy<_Fun>(__use_small_storage<_Fun>()); 1984 } 1985 1986 _LIBCPP_INLINE_VISIBILITY 1987 static const __policy* __create_empty() 1988 { 1989 static const _LIBCPP_CONSTEXPR __policy __policy_ = {nullptr, nullptr, 1990 true, 1991#ifndef _LIBCPP_NO_RTTI 1992 &typeid(void) 1993#else 1994 nullptr 1995#endif 1996 }; 1997 return &__policy_; 1998 } 1999 2000 private: 2001 template <typename _Fun> static void* __large_clone(const void* __s) 2002 { 2003 const _Fun* __f = static_cast<const _Fun*>(__s); 2004 return __f->__clone(); 2005 } 2006 2007 template <typename _Fun> 2008 static void __large_destroy(void* __s) { 2009 _Fun::__destroy_and_delete(static_cast<_Fun*>(__s)); 2010 } 2011 2012 template <typename _Fun> 2013 _LIBCPP_INLINE_VISIBILITY static const __policy* 2014 __choose_policy(/* is_small = */ false_type) { 2015 static const _LIBCPP_CONSTEXPR __policy __policy_ = { 2016 &__large_clone<_Fun>, &__large_destroy<_Fun>, false, 2017#ifndef _LIBCPP_NO_RTTI 2018 &typeid(typename _Fun::_Target) 2019#else 2020 nullptr 2021#endif 2022 }; 2023 return &__policy_; 2024 } 2025 2026 template <typename _Fun> 2027 _LIBCPP_INLINE_VISIBILITY static const __policy* 2028 __choose_policy(/* is_small = */ true_type) 2029 { 2030 static const _LIBCPP_CONSTEXPR __policy __policy_ = { 2031 nullptr, nullptr, false, 2032#ifndef _LIBCPP_NO_RTTI 2033 &typeid(typename _Fun::_Target) 2034#else 2035 nullptr 2036#endif 2037 }; 2038 return &__policy_; 2039 } 2040}; 2041 2042// Used to choose between perfect forwarding or pass-by-value. Pass-by-value is 2043// faster for types that can be passed in registers. 2044template <typename _Tp> 2045using __fast_forward = 2046 typename _VSTD::conditional<_VSTD::is_scalar<_Tp>::value, _Tp, _Tp&&>::type; 2047 2048// __policy_invoker calls an instance of __alloc_func held in __policy_storage. 2049 2050template <class _Fp> struct __policy_invoker; 2051 2052template <class _Rp, class... _ArgTypes> 2053struct __policy_invoker<_Rp(_ArgTypes...)> 2054{ 2055 typedef _Rp (*__Call)(const __policy_storage*, 2056 __fast_forward<_ArgTypes>...); 2057 2058 __Call __call_; 2059 2060 // Creates an invoker that throws bad_function_call. 2061 _LIBCPP_INLINE_VISIBILITY 2062 __policy_invoker() : __call_(&__call_empty) {} 2063 2064 // Creates an invoker that calls the given instance of __func. 2065 template <typename _Fun> 2066 _LIBCPP_INLINE_VISIBILITY static __policy_invoker __create() 2067 { 2068 return __policy_invoker(&__call_impl<_Fun>); 2069 } 2070 2071 private: 2072 _LIBCPP_INLINE_VISIBILITY 2073 explicit __policy_invoker(__Call __c) : __call_(__c) {} 2074 2075 static _Rp __call_empty(const __policy_storage*, 2076 __fast_forward<_ArgTypes>...) 2077 { 2078 __throw_bad_function_call(); 2079 } 2080 2081 template <typename _Fun> 2082 static _Rp __call_impl(const __policy_storage* __buf, 2083 __fast_forward<_ArgTypes>... __args) 2084 { 2085 _Fun* __f = reinterpret_cast<_Fun*>(__use_small_storage<_Fun>::value 2086 ? &__buf->__small 2087 : __buf->__large); 2088 return (*__f)(_VSTD::forward<_ArgTypes>(__args)...); 2089 } 2090}; 2091 2092// __policy_func uses a __policy and __policy_invoker to create a type-erased, 2093// copyable functor. 2094 2095template <class _Fp> class __policy_func; 2096 2097template <class _Rp, class... _ArgTypes> class __policy_func<_Rp(_ArgTypes...)> 2098{ 2099 // Inline storage for small objects. 2100 __policy_storage __buf_; 2101 2102 // Calls the value stored in __buf_. This could technically be part of 2103 // policy, but storing it here eliminates a level of indirection inside 2104 // operator(). 2105 typedef __function::__policy_invoker<_Rp(_ArgTypes...)> __invoker; 2106 __invoker __invoker_; 2107 2108 // The policy that describes how to move / copy / destroy __buf_. Never 2109 // null, even if the function is empty. 2110 const __policy* __policy_; 2111 2112 public: 2113 _LIBCPP_INLINE_VISIBILITY 2114 __policy_func() : __policy_(__policy::__create_empty()) {} 2115 2116 template <class _Fp, class _Alloc> 2117 _LIBCPP_INLINE_VISIBILITY __policy_func(_Fp&& __f, const _Alloc& __a) 2118 : __policy_(__policy::__create_empty()) 2119 { 2120 typedef __alloc_func<_Fp, _Alloc, _Rp(_ArgTypes...)> _Fun; 2121 typedef allocator_traits<_Alloc> __alloc_traits; 2122 typedef typename __rebind_alloc_helper<__alloc_traits, _Fun>::type 2123 _FunAlloc; 2124 2125 if (__function::__not_null(__f)) 2126 { 2127 __invoker_ = __invoker::template __create<_Fun>(); 2128 __policy_ = __policy::__create<_Fun>(); 2129 2130 _FunAlloc __af(__a); 2131 if (__use_small_storage<_Fun>()) 2132 { 2133 ::new ((void*)&__buf_.__small) 2134 _Fun(_VSTD::move(__f), _Alloc(__af)); 2135 } 2136 else 2137 { 2138 typedef __allocator_destructor<_FunAlloc> _Dp; 2139 unique_ptr<_Fun, _Dp> __hold(__af.allocate(1), _Dp(__af, 1)); 2140 ::new ((void*)__hold.get()) 2141 _Fun(_VSTD::move(__f), _Alloc(__af)); 2142 __buf_.__large = __hold.release(); 2143 } 2144 } 2145 } 2146 2147 template <class _Fp, class = typename enable_if<!is_same<typename decay<_Fp>::type, __policy_func>::value>::type> 2148 _LIBCPP_INLINE_VISIBILITY explicit __policy_func(_Fp&& __f) 2149 : __policy_(__policy::__create_empty()) { 2150 typedef __default_alloc_func<_Fp, _Rp(_ArgTypes...)> _Fun; 2151 2152 if (__function::__not_null(__f)) { 2153 __invoker_ = __invoker::template __create<_Fun>(); 2154 __policy_ = __policy::__create<_Fun>(); 2155 if (__use_small_storage<_Fun>()) { 2156 ::new ((void*)&__buf_.__small) _Fun(_VSTD::move(__f)); 2157 } else { 2158 __builtin_new_allocator::__holder_t __hold = 2159 __builtin_new_allocator::__allocate_type<_Fun>(1); 2160 __buf_.__large = ::new (__hold.get()) _Fun(_VSTD::move(__f)); 2161 (void)__hold.release(); 2162 } 2163 } 2164 } 2165 2166 _LIBCPP_INLINE_VISIBILITY 2167 __policy_func(const __policy_func& __f) 2168 : __buf_(__f.__buf_), __invoker_(__f.__invoker_), 2169 __policy_(__f.__policy_) 2170 { 2171 if (__policy_->__clone) 2172 __buf_.__large = __policy_->__clone(__f.__buf_.__large); 2173 } 2174 2175 _LIBCPP_INLINE_VISIBILITY 2176 __policy_func(__policy_func&& __f) 2177 : __buf_(__f.__buf_), __invoker_(__f.__invoker_), 2178 __policy_(__f.__policy_) 2179 { 2180 if (__policy_->__destroy) 2181 { 2182 __f.__policy_ = __policy::__create_empty(); 2183 __f.__invoker_ = __invoker(); 2184 } 2185 } 2186 2187 _LIBCPP_INLINE_VISIBILITY 2188 ~__policy_func() 2189 { 2190 if (__policy_->__destroy) 2191 __policy_->__destroy(__buf_.__large); 2192 } 2193 2194 _LIBCPP_INLINE_VISIBILITY 2195 __policy_func& operator=(__policy_func&& __f) 2196 { 2197 *this = nullptr; 2198 __buf_ = __f.__buf_; 2199 __invoker_ = __f.__invoker_; 2200 __policy_ = __f.__policy_; 2201 __f.__policy_ = __policy::__create_empty(); 2202 __f.__invoker_ = __invoker(); 2203 return *this; 2204 } 2205 2206 _LIBCPP_INLINE_VISIBILITY 2207 __policy_func& operator=(nullptr_t) 2208 { 2209 const __policy* __p = __policy_; 2210 __policy_ = __policy::__create_empty(); 2211 __invoker_ = __invoker(); 2212 if (__p->__destroy) 2213 __p->__destroy(__buf_.__large); 2214 return *this; 2215 } 2216 2217 _LIBCPP_INLINE_VISIBILITY 2218 _Rp operator()(_ArgTypes&&... __args) const 2219 { 2220 return __invoker_.__call_(_VSTD::addressof(__buf_), 2221 _VSTD::forward<_ArgTypes>(__args)...); 2222 } 2223 2224 _LIBCPP_INLINE_VISIBILITY 2225 void swap(__policy_func& __f) 2226 { 2227 _VSTD::swap(__invoker_, __f.__invoker_); 2228 _VSTD::swap(__policy_, __f.__policy_); 2229 _VSTD::swap(__buf_, __f.__buf_); 2230 } 2231 2232 _LIBCPP_INLINE_VISIBILITY 2233 explicit operator bool() const _NOEXCEPT 2234 { 2235 return !__policy_->__is_null; 2236 } 2237 2238#ifndef _LIBCPP_NO_RTTI 2239 _LIBCPP_INLINE_VISIBILITY 2240 const std::type_info& target_type() const _NOEXCEPT 2241 { 2242 return *__policy_->__type_info; 2243 } 2244 2245 template <typename _Tp> 2246 _LIBCPP_INLINE_VISIBILITY const _Tp* target() const _NOEXCEPT 2247 { 2248 if (__policy_->__is_null || typeid(_Tp) != *__policy_->__type_info) 2249 return nullptr; 2250 if (__policy_->__clone) // Out of line storage. 2251 return reinterpret_cast<const _Tp*>(__buf_.__large); 2252 else 2253 return reinterpret_cast<const _Tp*>(&__buf_.__small); 2254 } 2255#endif // _LIBCPP_NO_RTTI 2256}; 2257 2258#if defined(_LIBCPP_HAS_BLOCKS_RUNTIME) && !defined(_LIBCPP_HAS_OBJC_ARC) 2259 2260template<class _Rp1, class ..._ArgTypes1, class _Alloc, class _Rp, class ..._ArgTypes> 2261class __func<_Rp1(^)(_ArgTypes1...), _Alloc, _Rp(_ArgTypes...)> 2262 : public __base<_Rp(_ArgTypes...)> 2263{ 2264 typedef _Rp1(^__block_type)(_ArgTypes1...); 2265 __block_type __f_; 2266 2267public: 2268 _LIBCPP_INLINE_VISIBILITY 2269 explicit __func(__block_type const& __f) 2270 : __f_(__f ? Block_copy(__f) : (__block_type)0) 2271 { } 2272 2273 // [TODO] add && to save on a retain 2274 2275 _LIBCPP_INLINE_VISIBILITY 2276 explicit __func(__block_type __f, const _Alloc& /* unused */) 2277 : __f_(__f ? Block_copy(__f) : (__block_type)0) 2278 { } 2279 2280 virtual __base<_Rp(_ArgTypes...)>* __clone() const { 2281 _LIBCPP_ASSERT(false, 2282 "Block pointers are just pointers, so they should always fit into " 2283 "std::function's small buffer optimization. This function should " 2284 "never be invoked."); 2285 return nullptr; 2286 } 2287 2288 virtual void __clone(__base<_Rp(_ArgTypes...)>* __p) const { 2289 ::new (__p) __func(__f_); 2290 } 2291 2292 virtual void destroy() _NOEXCEPT { 2293 if (__f_) 2294 Block_release(__f_); 2295 __f_ = 0; 2296 } 2297 2298 virtual void destroy_deallocate() _NOEXCEPT { 2299 _LIBCPP_ASSERT(false, 2300 "Block pointers are just pointers, so they should always fit into " 2301 "std::function's small buffer optimization. This function should " 2302 "never be invoked."); 2303 } 2304 2305 virtual _Rp operator()(_ArgTypes&& ... __arg) { 2306 return __invoke(__f_, _VSTD::forward<_ArgTypes>(__arg)...); 2307 } 2308 2309#ifndef _LIBCPP_NO_RTTI 2310 virtual const void* target(type_info const& __ti) const _NOEXCEPT { 2311 if (__ti == typeid(__func::__block_type)) 2312 return &__f_; 2313 return (const void*)nullptr; 2314 } 2315 2316 virtual const std::type_info& target_type() const _NOEXCEPT { 2317 return typeid(__func::__block_type); 2318 } 2319#endif // _LIBCPP_NO_RTTI 2320}; 2321 2322#endif // _LIBCPP_HAS_EXTENSION_BLOCKS && !_LIBCPP_HAS_OBJC_ARC 2323 2324} // __function 2325 2326template<class _Rp, class ..._ArgTypes> 2327class _LIBCPP_TEMPLATE_VIS function<_Rp(_ArgTypes...)> 2328 : public __function::__maybe_derive_from_unary_function<_Rp(_ArgTypes...)>, 2329 public __function::__maybe_derive_from_binary_function<_Rp(_ArgTypes...)> 2330{ 2331#ifndef _LIBCPP_ABI_OPTIMIZED_FUNCTION 2332 typedef __function::__value_func<_Rp(_ArgTypes...)> __func; 2333#else 2334 typedef __function::__policy_func<_Rp(_ArgTypes...)> __func; 2335#endif 2336 2337 __func __f_; 2338 2339 template <class _Fp, bool = _And< 2340 _IsNotSame<__uncvref_t<_Fp>, function>, 2341 __invokable<_Fp, _ArgTypes...> 2342 >::value> 2343 struct __callable; 2344 template <class _Fp> 2345 struct __callable<_Fp, true> 2346 { 2347 static const bool value = is_same<void, _Rp>::value || 2348 is_convertible<typename __invoke_of<_Fp, _ArgTypes...>::type, 2349 _Rp>::value; 2350 }; 2351 template <class _Fp> 2352 struct __callable<_Fp, false> 2353 { 2354 static const bool value = false; 2355 }; 2356 2357 template <class _Fp> 2358 using _EnableIfLValueCallable = typename enable_if<__callable<_Fp&>::value>::type; 2359public: 2360 typedef _Rp result_type; 2361 2362 // construct/copy/destroy: 2363 _LIBCPP_INLINE_VISIBILITY 2364 function() _NOEXCEPT { } 2365 _LIBCPP_INLINE_VISIBILITY 2366 function(nullptr_t) _NOEXCEPT {} 2367 function(const function&); 2368 function(function&&) _NOEXCEPT; 2369 template<class _Fp, class = _EnableIfLValueCallable<_Fp>> 2370 function(_Fp); 2371 2372#if _LIBCPP_STD_VER <= 14 2373 template<class _Alloc> 2374 _LIBCPP_INLINE_VISIBILITY 2375 function(allocator_arg_t, const _Alloc&) _NOEXCEPT {} 2376 template<class _Alloc> 2377 _LIBCPP_INLINE_VISIBILITY 2378 function(allocator_arg_t, const _Alloc&, nullptr_t) _NOEXCEPT {} 2379 template<class _Alloc> 2380 function(allocator_arg_t, const _Alloc&, const function&); 2381 template<class _Alloc> 2382 function(allocator_arg_t, const _Alloc&, function&&); 2383 template<class _Fp, class _Alloc, class = _EnableIfLValueCallable<_Fp>> 2384 function(allocator_arg_t, const _Alloc& __a, _Fp __f); 2385#endif 2386 2387 function& operator=(const function&); 2388 function& operator=(function&&) _NOEXCEPT; 2389 function& operator=(nullptr_t) _NOEXCEPT; 2390 template<class _Fp, class = _EnableIfLValueCallable<typename decay<_Fp>::type>> 2391 function& operator=(_Fp&&); 2392 2393 ~function(); 2394 2395 // function modifiers: 2396 void swap(function&) _NOEXCEPT; 2397 2398#if _LIBCPP_STD_VER <= 14 2399 template<class _Fp, class _Alloc> 2400 _LIBCPP_INLINE_VISIBILITY 2401 void assign(_Fp&& __f, const _Alloc& __a) 2402 {function(allocator_arg, __a, _VSTD::forward<_Fp>(__f)).swap(*this);} 2403#endif 2404 2405 // function capacity: 2406 _LIBCPP_INLINE_VISIBILITY 2407 _LIBCPP_EXPLICIT operator bool() const _NOEXCEPT { 2408 return static_cast<bool>(__f_); 2409 } 2410 2411 // deleted overloads close possible hole in the type system 2412 template<class _R2, class... _ArgTypes2> 2413 bool operator==(const function<_R2(_ArgTypes2...)>&) const = delete; 2414 template<class _R2, class... _ArgTypes2> 2415 bool operator!=(const function<_R2(_ArgTypes2...)>&) const = delete; 2416public: 2417 // function invocation: 2418 _Rp operator()(_ArgTypes...) const; 2419 2420#ifndef _LIBCPP_NO_RTTI 2421 // function target access: 2422 const std::type_info& target_type() const _NOEXCEPT; 2423 template <typename _Tp> _Tp* target() _NOEXCEPT; 2424 template <typename _Tp> const _Tp* target() const _NOEXCEPT; 2425#endif // _LIBCPP_NO_RTTI 2426}; 2427 2428#ifndef _LIBCPP_HAS_NO_DEDUCTION_GUIDES 2429template<class _Rp, class ..._Ap> 2430function(_Rp(*)(_Ap...)) -> function<_Rp(_Ap...)>; 2431 2432template<class _Fp> 2433struct __strip_signature; 2434 2435template<class _Rp, class _Gp, class ..._Ap> 2436struct __strip_signature<_Rp (_Gp::*) (_Ap...)> { using type = _Rp(_Ap...); }; 2437template<class _Rp, class _Gp, class ..._Ap> 2438struct __strip_signature<_Rp (_Gp::*) (_Ap...) const> { using type = _Rp(_Ap...); }; 2439template<class _Rp, class _Gp, class ..._Ap> 2440struct __strip_signature<_Rp (_Gp::*) (_Ap...) volatile> { using type = _Rp(_Ap...); }; 2441template<class _Rp, class _Gp, class ..._Ap> 2442struct __strip_signature<_Rp (_Gp::*) (_Ap...) const volatile> { using type = _Rp(_Ap...); }; 2443 2444template<class _Rp, class _Gp, class ..._Ap> 2445struct __strip_signature<_Rp (_Gp::*) (_Ap...) &> { using type = _Rp(_Ap...); }; 2446template<class _Rp, class _Gp, class ..._Ap> 2447struct __strip_signature<_Rp (_Gp::*) (_Ap...) const &> { using type = _Rp(_Ap...); }; 2448template<class _Rp, class _Gp, class ..._Ap> 2449struct __strip_signature<_Rp (_Gp::*) (_Ap...) volatile &> { using type = _Rp(_Ap...); }; 2450template<class _Rp, class _Gp, class ..._Ap> 2451struct __strip_signature<_Rp (_Gp::*) (_Ap...) const volatile &> { using type = _Rp(_Ap...); }; 2452 2453template<class _Rp, class _Gp, class ..._Ap> 2454struct __strip_signature<_Rp (_Gp::*) (_Ap...) noexcept> { using type = _Rp(_Ap...); }; 2455template<class _Rp, class _Gp, class ..._Ap> 2456struct __strip_signature<_Rp (_Gp::*) (_Ap...) const noexcept> { using type = _Rp(_Ap...); }; 2457template<class _Rp, class _Gp, class ..._Ap> 2458struct __strip_signature<_Rp (_Gp::*) (_Ap...) volatile noexcept> { using type = _Rp(_Ap...); }; 2459template<class _Rp, class _Gp, class ..._Ap> 2460struct __strip_signature<_Rp (_Gp::*) (_Ap...) const volatile noexcept> { using type = _Rp(_Ap...); }; 2461 2462template<class _Rp, class _Gp, class ..._Ap> 2463struct __strip_signature<_Rp (_Gp::*) (_Ap...) & noexcept> { using type = _Rp(_Ap...); }; 2464template<class _Rp, class _Gp, class ..._Ap> 2465struct __strip_signature<_Rp (_Gp::*) (_Ap...) const & noexcept> { using type = _Rp(_Ap...); }; 2466template<class _Rp, class _Gp, class ..._Ap> 2467struct __strip_signature<_Rp (_Gp::*) (_Ap...) volatile & noexcept> { using type = _Rp(_Ap...); }; 2468template<class _Rp, class _Gp, class ..._Ap> 2469struct __strip_signature<_Rp (_Gp::*) (_Ap...) const volatile & noexcept> { using type = _Rp(_Ap...); }; 2470 2471template<class _Fp, class _Stripped = typename __strip_signature<decltype(&_Fp::operator())>::type> 2472function(_Fp) -> function<_Stripped>; 2473#endif // !_LIBCPP_HAS_NO_DEDUCTION_GUIDES 2474 2475template<class _Rp, class ..._ArgTypes> 2476function<_Rp(_ArgTypes...)>::function(const function& __f) : __f_(__f.__f_) {} 2477 2478#if _LIBCPP_STD_VER <= 14 2479template<class _Rp, class ..._ArgTypes> 2480template <class _Alloc> 2481function<_Rp(_ArgTypes...)>::function(allocator_arg_t, const _Alloc&, 2482 const function& __f) : __f_(__f.__f_) {} 2483#endif 2484 2485template <class _Rp, class... _ArgTypes> 2486function<_Rp(_ArgTypes...)>::function(function&& __f) _NOEXCEPT 2487 : __f_(_VSTD::move(__f.__f_)) {} 2488 2489#if _LIBCPP_STD_VER <= 14 2490template<class _Rp, class ..._ArgTypes> 2491template <class _Alloc> 2492function<_Rp(_ArgTypes...)>::function(allocator_arg_t, const _Alloc&, 2493 function&& __f) 2494 : __f_(_VSTD::move(__f.__f_)) {} 2495#endif 2496 2497template <class _Rp, class... _ArgTypes> 2498template <class _Fp, class> 2499function<_Rp(_ArgTypes...)>::function(_Fp __f) : __f_(_VSTD::move(__f)) {} 2500 2501#if _LIBCPP_STD_VER <= 14 2502template <class _Rp, class... _ArgTypes> 2503template <class _Fp, class _Alloc, class> 2504function<_Rp(_ArgTypes...)>::function(allocator_arg_t, const _Alloc& __a, 2505 _Fp __f) 2506 : __f_(_VSTD::move(__f), __a) {} 2507#endif 2508 2509template<class _Rp, class ..._ArgTypes> 2510function<_Rp(_ArgTypes...)>& 2511function<_Rp(_ArgTypes...)>::operator=(const function& __f) 2512{ 2513 function(__f).swap(*this); 2514 return *this; 2515} 2516 2517template<class _Rp, class ..._ArgTypes> 2518function<_Rp(_ArgTypes...)>& 2519function<_Rp(_ArgTypes...)>::operator=(function&& __f) _NOEXCEPT 2520{ 2521 __f_ = std::move(__f.__f_); 2522 return *this; 2523} 2524 2525template<class _Rp, class ..._ArgTypes> 2526function<_Rp(_ArgTypes...)>& 2527function<_Rp(_ArgTypes...)>::operator=(nullptr_t) _NOEXCEPT 2528{ 2529 __f_ = nullptr; 2530 return *this; 2531} 2532 2533template<class _Rp, class ..._ArgTypes> 2534template <class _Fp, class> 2535function<_Rp(_ArgTypes...)>& 2536function<_Rp(_ArgTypes...)>::operator=(_Fp&& __f) 2537{ 2538 function(_VSTD::forward<_Fp>(__f)).swap(*this); 2539 return *this; 2540} 2541 2542template<class _Rp, class ..._ArgTypes> 2543function<_Rp(_ArgTypes...)>::~function() {} 2544 2545template<class _Rp, class ..._ArgTypes> 2546void 2547function<_Rp(_ArgTypes...)>::swap(function& __f) _NOEXCEPT 2548{ 2549 __f_.swap(__f.__f_); 2550} 2551 2552template<class _Rp, class ..._ArgTypes> 2553_Rp 2554function<_Rp(_ArgTypes...)>::operator()(_ArgTypes... __arg) const 2555{ 2556 return __f_(_VSTD::forward<_ArgTypes>(__arg)...); 2557} 2558 2559#ifndef _LIBCPP_NO_RTTI 2560 2561template<class _Rp, class ..._ArgTypes> 2562const std::type_info& 2563function<_Rp(_ArgTypes...)>::target_type() const _NOEXCEPT 2564{ 2565 return __f_.target_type(); 2566} 2567 2568template<class _Rp, class ..._ArgTypes> 2569template <typename _Tp> 2570_Tp* 2571function<_Rp(_ArgTypes...)>::target() _NOEXCEPT 2572{ 2573 return (_Tp*)(__f_.template target<_Tp>()); 2574} 2575 2576template<class _Rp, class ..._ArgTypes> 2577template <typename _Tp> 2578const _Tp* 2579function<_Rp(_ArgTypes...)>::target() const _NOEXCEPT 2580{ 2581 return __f_.template target<_Tp>(); 2582} 2583 2584#endif // _LIBCPP_NO_RTTI 2585 2586template <class _Rp, class... _ArgTypes> 2587inline _LIBCPP_INLINE_VISIBILITY 2588bool 2589operator==(const function<_Rp(_ArgTypes...)>& __f, nullptr_t) _NOEXCEPT {return !__f;} 2590 2591template <class _Rp, class... _ArgTypes> 2592inline _LIBCPP_INLINE_VISIBILITY 2593bool 2594operator==(nullptr_t, const function<_Rp(_ArgTypes...)>& __f) _NOEXCEPT {return !__f;} 2595 2596template <class _Rp, class... _ArgTypes> 2597inline _LIBCPP_INLINE_VISIBILITY 2598bool 2599operator!=(const function<_Rp(_ArgTypes...)>& __f, nullptr_t) _NOEXCEPT {return (bool)__f;} 2600 2601template <class _Rp, class... _ArgTypes> 2602inline _LIBCPP_INLINE_VISIBILITY 2603bool 2604operator!=(nullptr_t, const function<_Rp(_ArgTypes...)>& __f) _NOEXCEPT {return (bool)__f;} 2605 2606template <class _Rp, class... _ArgTypes> 2607inline _LIBCPP_INLINE_VISIBILITY 2608void 2609swap(function<_Rp(_ArgTypes...)>& __x, function<_Rp(_ArgTypes...)>& __y) _NOEXCEPT 2610{return __x.swap(__y);} 2611 2612#else // _LIBCPP_CXX03_LANG 2613 2614#include <__functional_03> 2615 2616#endif 2617 2618//////////////////////////////////////////////////////////////////////////////// 2619// BIND 2620//============================================================================== 2621 2622template<class _Tp> struct __is_bind_expression : public false_type {}; 2623template<class _Tp> struct _LIBCPP_TEMPLATE_VIS is_bind_expression 2624 : public __is_bind_expression<typename remove_cv<_Tp>::type> {}; 2625 2626#if _LIBCPP_STD_VER > 14 2627template <class _Tp> 2628_LIBCPP_INLINE_VAR constexpr size_t is_bind_expression_v = is_bind_expression<_Tp>::value; 2629#endif 2630 2631template<class _Tp> struct __is_placeholder : public integral_constant<int, 0> {}; 2632template<class _Tp> struct _LIBCPP_TEMPLATE_VIS is_placeholder 2633 : public __is_placeholder<typename remove_cv<_Tp>::type> {}; 2634 2635#if _LIBCPP_STD_VER > 14 2636template <class _Tp> 2637_LIBCPP_INLINE_VAR constexpr size_t is_placeholder_v = is_placeholder<_Tp>::value; 2638#endif 2639 2640namespace placeholders 2641{ 2642 2643template <int _Np> struct __ph {}; 2644 2645#if defined(_LIBCPP_CXX03_LANG) || defined(_LIBCPP_BUILDING_LIBRARY) 2646_LIBCPP_FUNC_VIS extern const __ph<1> _1; 2647_LIBCPP_FUNC_VIS extern const __ph<2> _2; 2648_LIBCPP_FUNC_VIS extern const __ph<3> _3; 2649_LIBCPP_FUNC_VIS extern const __ph<4> _4; 2650_LIBCPP_FUNC_VIS extern const __ph<5> _5; 2651_LIBCPP_FUNC_VIS extern const __ph<6> _6; 2652_LIBCPP_FUNC_VIS extern const __ph<7> _7; 2653_LIBCPP_FUNC_VIS extern const __ph<8> _8; 2654_LIBCPP_FUNC_VIS extern const __ph<9> _9; 2655_LIBCPP_FUNC_VIS extern const __ph<10> _10; 2656#else 2657/* _LIBCPP_INLINE_VAR */ constexpr __ph<1> _1{}; 2658/* _LIBCPP_INLINE_VAR */ constexpr __ph<2> _2{}; 2659/* _LIBCPP_INLINE_VAR */ constexpr __ph<3> _3{}; 2660/* _LIBCPP_INLINE_VAR */ constexpr __ph<4> _4{}; 2661/* _LIBCPP_INLINE_VAR */ constexpr __ph<5> _5{}; 2662/* _LIBCPP_INLINE_VAR */ constexpr __ph<6> _6{}; 2663/* _LIBCPP_INLINE_VAR */ constexpr __ph<7> _7{}; 2664/* _LIBCPP_INLINE_VAR */ constexpr __ph<8> _8{}; 2665/* _LIBCPP_INLINE_VAR */ constexpr __ph<9> _9{}; 2666/* _LIBCPP_INLINE_VAR */ constexpr __ph<10> _10{}; 2667#endif // defined(_LIBCPP_CXX03_LANG) || defined(_LIBCPP_BUILDING_LIBRARY) 2668 2669} // placeholders 2670 2671template<int _Np> 2672struct __is_placeholder<placeholders::__ph<_Np> > 2673 : public integral_constant<int, _Np> {}; 2674 2675 2676#ifndef _LIBCPP_CXX03_LANG 2677 2678template <class _Tp, class _Uj> 2679inline _LIBCPP_INLINE_VISIBILITY 2680_Tp& 2681__mu(reference_wrapper<_Tp> __t, _Uj&) 2682{ 2683 return __t.get(); 2684} 2685 2686template <class _Ti, class ..._Uj, size_t ..._Indx> 2687inline _LIBCPP_INLINE_VISIBILITY 2688typename __invoke_of<_Ti&, _Uj...>::type 2689__mu_expand(_Ti& __ti, tuple<_Uj...>& __uj, __tuple_indices<_Indx...>) 2690{ 2691 return __ti(_VSTD::forward<_Uj>(_VSTD::get<_Indx>(__uj))...); 2692} 2693 2694template <class _Ti, class ..._Uj> 2695inline _LIBCPP_INLINE_VISIBILITY 2696typename _EnableIf 2697< 2698 is_bind_expression<_Ti>::value, 2699 __invoke_of<_Ti&, _Uj...> 2700>::type 2701__mu(_Ti& __ti, tuple<_Uj...>& __uj) 2702{ 2703 typedef typename __make_tuple_indices<sizeof...(_Uj)>::type __indices; 2704 return __mu_expand(__ti, __uj, __indices()); 2705} 2706 2707template <bool IsPh, class _Ti, class _Uj> 2708struct __mu_return2 {}; 2709 2710template <class _Ti, class _Uj> 2711struct __mu_return2<true, _Ti, _Uj> 2712{ 2713 typedef typename tuple_element<is_placeholder<_Ti>::value - 1, _Uj>::type type; 2714}; 2715 2716template <class _Ti, class _Uj> 2717inline _LIBCPP_INLINE_VISIBILITY 2718typename enable_if 2719< 2720 0 < is_placeholder<_Ti>::value, 2721 typename __mu_return2<0 < is_placeholder<_Ti>::value, _Ti, _Uj>::type 2722>::type 2723__mu(_Ti&, _Uj& __uj) 2724{ 2725 const size_t _Indx = is_placeholder<_Ti>::value - 1; 2726 return _VSTD::forward<typename tuple_element<_Indx, _Uj>::type>(_VSTD::get<_Indx>(__uj)); 2727} 2728 2729template <class _Ti, class _Uj> 2730inline _LIBCPP_INLINE_VISIBILITY 2731typename enable_if 2732< 2733 !is_bind_expression<_Ti>::value && 2734 is_placeholder<_Ti>::value == 0 && 2735 !__is_reference_wrapper<_Ti>::value, 2736 _Ti& 2737>::type 2738__mu(_Ti& __ti, _Uj&) 2739{ 2740 return __ti; 2741} 2742 2743template <class _Ti, bool IsReferenceWrapper, bool IsBindEx, bool IsPh, 2744 class _TupleUj> 2745struct __mu_return_impl; 2746 2747template <bool _Invokable, class _Ti, class ..._Uj> 2748struct __mu_return_invokable // false 2749{ 2750 typedef __nat type; 2751}; 2752 2753template <class _Ti, class ..._Uj> 2754struct __mu_return_invokable<true, _Ti, _Uj...> 2755{ 2756 typedef typename __invoke_of<_Ti&, _Uj...>::type type; 2757}; 2758 2759template <class _Ti, class ..._Uj> 2760struct __mu_return_impl<_Ti, false, true, false, tuple<_Uj...> > 2761 : public __mu_return_invokable<__invokable<_Ti&, _Uj...>::value, _Ti, _Uj...> 2762{ 2763}; 2764 2765template <class _Ti, class _TupleUj> 2766struct __mu_return_impl<_Ti, false, false, true, _TupleUj> 2767{ 2768 typedef typename tuple_element<is_placeholder<_Ti>::value - 1, 2769 _TupleUj>::type&& type; 2770}; 2771 2772template <class _Ti, class _TupleUj> 2773struct __mu_return_impl<_Ti, true, false, false, _TupleUj> 2774{ 2775 typedef typename _Ti::type& type; 2776}; 2777 2778template <class _Ti, class _TupleUj> 2779struct __mu_return_impl<_Ti, false, false, false, _TupleUj> 2780{ 2781 typedef _Ti& type; 2782}; 2783 2784template <class _Ti, class _TupleUj> 2785struct __mu_return 2786 : public __mu_return_impl<_Ti, 2787 __is_reference_wrapper<_Ti>::value, 2788 is_bind_expression<_Ti>::value, 2789 0 < is_placeholder<_Ti>::value && 2790 is_placeholder<_Ti>::value <= tuple_size<_TupleUj>::value, 2791 _TupleUj> 2792{ 2793}; 2794 2795template <class _Fp, class _BoundArgs, class _TupleUj> 2796struct __is_valid_bind_return 2797{ 2798 static const bool value = false; 2799}; 2800 2801template <class _Fp, class ..._BoundArgs, class _TupleUj> 2802struct __is_valid_bind_return<_Fp, tuple<_BoundArgs...>, _TupleUj> 2803{ 2804 static const bool value = __invokable<_Fp, 2805 typename __mu_return<_BoundArgs, _TupleUj>::type...>::value; 2806}; 2807 2808template <class _Fp, class ..._BoundArgs, class _TupleUj> 2809struct __is_valid_bind_return<_Fp, const tuple<_BoundArgs...>, _TupleUj> 2810{ 2811 static const bool value = __invokable<_Fp, 2812 typename __mu_return<const _BoundArgs, _TupleUj>::type...>::value; 2813}; 2814 2815template <class _Fp, class _BoundArgs, class _TupleUj, 2816 bool = __is_valid_bind_return<_Fp, _BoundArgs, _TupleUj>::value> 2817struct __bind_return; 2818 2819template <class _Fp, class ..._BoundArgs, class _TupleUj> 2820struct __bind_return<_Fp, tuple<_BoundArgs...>, _TupleUj, true> 2821{ 2822 typedef typename __invoke_of 2823 < 2824 _Fp&, 2825 typename __mu_return 2826 < 2827 _BoundArgs, 2828 _TupleUj 2829 >::type... 2830 >::type type; 2831}; 2832 2833template <class _Fp, class ..._BoundArgs, class _TupleUj> 2834struct __bind_return<_Fp, const tuple<_BoundArgs...>, _TupleUj, true> 2835{ 2836 typedef typename __invoke_of 2837 < 2838 _Fp&, 2839 typename __mu_return 2840 < 2841 const _BoundArgs, 2842 _TupleUj 2843 >::type... 2844 >::type type; 2845}; 2846 2847template <class _Fp, class _BoundArgs, size_t ..._Indx, class _Args> 2848inline _LIBCPP_INLINE_VISIBILITY 2849typename __bind_return<_Fp, _BoundArgs, _Args>::type 2850__apply_functor(_Fp& __f, _BoundArgs& __bound_args, __tuple_indices<_Indx...>, 2851 _Args&& __args) 2852{ 2853 return _VSTD::__invoke(__f, _VSTD::__mu(_VSTD::get<_Indx>(__bound_args), __args)...); 2854} 2855 2856template<class _Fp, class ..._BoundArgs> 2857class __bind 2858 : public __weak_result_type<typename decay<_Fp>::type> 2859{ 2860protected: 2861 typedef typename decay<_Fp>::type _Fd; 2862 typedef tuple<typename decay<_BoundArgs>::type...> _Td; 2863private: 2864 _Fd __f_; 2865 _Td __bound_args_; 2866 2867 typedef typename __make_tuple_indices<sizeof...(_BoundArgs)>::type __indices; 2868public: 2869 template <class _Gp, class ..._BA, 2870 class = typename enable_if 2871 < 2872 is_constructible<_Fd, _Gp>::value && 2873 !is_same<typename remove_reference<_Gp>::type, 2874 __bind>::value 2875 >::type> 2876 _LIBCPP_INLINE_VISIBILITY 2877 explicit __bind(_Gp&& __f, _BA&& ...__bound_args) 2878 : __f_(_VSTD::forward<_Gp>(__f)), 2879 __bound_args_(_VSTD::forward<_BA>(__bound_args)...) {} 2880 2881 template <class ..._Args> 2882 _LIBCPP_INLINE_VISIBILITY 2883 typename __bind_return<_Fd, _Td, tuple<_Args&&...> >::type 2884 operator()(_Args&& ...__args) 2885 { 2886 return _VSTD::__apply_functor(__f_, __bound_args_, __indices(), 2887 tuple<_Args&&...>(_VSTD::forward<_Args>(__args)...)); 2888 } 2889 2890 template <class ..._Args> 2891 _LIBCPP_INLINE_VISIBILITY 2892 typename __bind_return<const _Fd, const _Td, tuple<_Args&&...> >::type 2893 operator()(_Args&& ...__args) const 2894 { 2895 return _VSTD::__apply_functor(__f_, __bound_args_, __indices(), 2896 tuple<_Args&&...>(_VSTD::forward<_Args>(__args)...)); 2897 } 2898}; 2899 2900template<class _Fp, class ..._BoundArgs> 2901struct __is_bind_expression<__bind<_Fp, _BoundArgs...> > : public true_type {}; 2902 2903template<class _Rp, class _Fp, class ..._BoundArgs> 2904class __bind_r 2905 : public __bind<_Fp, _BoundArgs...> 2906{ 2907 typedef __bind<_Fp, _BoundArgs...> base; 2908 typedef typename base::_Fd _Fd; 2909 typedef typename base::_Td _Td; 2910public: 2911 typedef _Rp result_type; 2912 2913 2914 template <class _Gp, class ..._BA, 2915 class = typename enable_if 2916 < 2917 is_constructible<_Fd, _Gp>::value && 2918 !is_same<typename remove_reference<_Gp>::type, 2919 __bind_r>::value 2920 >::type> 2921 _LIBCPP_INLINE_VISIBILITY 2922 explicit __bind_r(_Gp&& __f, _BA&& ...__bound_args) 2923 : base(_VSTD::forward<_Gp>(__f), 2924 _VSTD::forward<_BA>(__bound_args)...) {} 2925 2926 template <class ..._Args> 2927 _LIBCPP_INLINE_VISIBILITY 2928 typename enable_if 2929 < 2930 is_convertible<typename __bind_return<_Fd, _Td, tuple<_Args&&...> >::type, 2931 result_type>::value || is_void<_Rp>::value, 2932 result_type 2933 >::type 2934 operator()(_Args&& ...__args) 2935 { 2936 typedef __invoke_void_return_wrapper<_Rp> _Invoker; 2937 return _Invoker::__call(static_cast<base&>(*this), _VSTD::forward<_Args>(__args)...); 2938 } 2939 2940 template <class ..._Args> 2941 _LIBCPP_INLINE_VISIBILITY 2942 typename enable_if 2943 < 2944 is_convertible<typename __bind_return<const _Fd, const _Td, tuple<_Args&&...> >::type, 2945 result_type>::value || is_void<_Rp>::value, 2946 result_type 2947 >::type 2948 operator()(_Args&& ...__args) const 2949 { 2950 typedef __invoke_void_return_wrapper<_Rp> _Invoker; 2951 return _Invoker::__call(static_cast<base const&>(*this), _VSTD::forward<_Args>(__args)...); 2952 } 2953}; 2954 2955template<class _Rp, class _Fp, class ..._BoundArgs> 2956struct __is_bind_expression<__bind_r<_Rp, _Fp, _BoundArgs...> > : public true_type {}; 2957 2958template<class _Fp, class ..._BoundArgs> 2959inline _LIBCPP_INLINE_VISIBILITY 2960__bind<_Fp, _BoundArgs...> 2961bind(_Fp&& __f, _BoundArgs&&... __bound_args) 2962{ 2963 typedef __bind<_Fp, _BoundArgs...> type; 2964 return type(_VSTD::forward<_Fp>(__f), _VSTD::forward<_BoundArgs>(__bound_args)...); 2965} 2966 2967template<class _Rp, class _Fp, class ..._BoundArgs> 2968inline _LIBCPP_INLINE_VISIBILITY 2969__bind_r<_Rp, _Fp, _BoundArgs...> 2970bind(_Fp&& __f, _BoundArgs&&... __bound_args) 2971{ 2972 typedef __bind_r<_Rp, _Fp, _BoundArgs...> type; 2973 return type(_VSTD::forward<_Fp>(__f), _VSTD::forward<_BoundArgs>(__bound_args)...); 2974} 2975 2976#endif // _LIBCPP_CXX03_LANG 2977 2978#if _LIBCPP_STD_VER > 14 2979 2980template <class _Fn, class ..._Args> 2981invoke_result_t<_Fn, _Args...> 2982invoke(_Fn&& __f, _Args&&... __args) 2983 noexcept(is_nothrow_invocable_v<_Fn, _Args...>) 2984{ 2985 return _VSTD::__invoke(_VSTD::forward<_Fn>(__f), _VSTD::forward<_Args>(__args)...); 2986} 2987 2988template <class _DecayFunc> 2989class _LIBCPP_TEMPLATE_VIS __not_fn_imp { 2990 _DecayFunc __fd; 2991 2992public: 2993 __not_fn_imp() = delete; 2994 2995 template <class ..._Args> 2996 _LIBCPP_INLINE_VISIBILITY 2997 auto operator()(_Args&& ...__args) & 2998 noexcept(noexcept(!_VSTD::invoke(__fd, _VSTD::forward<_Args>(__args)...))) 2999 -> decltype( !_VSTD::invoke(__fd, _VSTD::forward<_Args>(__args)...)) 3000 { return !_VSTD::invoke(__fd, _VSTD::forward<_Args>(__args)...); } 3001 3002 template <class ..._Args> 3003 _LIBCPP_INLINE_VISIBILITY 3004 auto operator()(_Args&& ...__args) && 3005 noexcept(noexcept(!_VSTD::invoke(_VSTD::move(__fd), _VSTD::forward<_Args>(__args)...))) 3006 -> decltype( !_VSTD::invoke(_VSTD::move(__fd), _VSTD::forward<_Args>(__args)...)) 3007 { return !_VSTD::invoke(_VSTD::move(__fd), _VSTD::forward<_Args>(__args)...); } 3008 3009 template <class ..._Args> 3010 _LIBCPP_INLINE_VISIBILITY 3011 auto operator()(_Args&& ...__args) const& 3012 noexcept(noexcept(!_VSTD::invoke(__fd, _VSTD::forward<_Args>(__args)...))) 3013 -> decltype( !_VSTD::invoke(__fd, _VSTD::forward<_Args>(__args)...)) 3014 { return !_VSTD::invoke(__fd, _VSTD::forward<_Args>(__args)...); } 3015 3016 3017 template <class ..._Args> 3018 _LIBCPP_INLINE_VISIBILITY 3019 auto operator()(_Args&& ...__args) const&& 3020 noexcept(noexcept(!_VSTD::invoke(_VSTD::move(__fd), _VSTD::forward<_Args>(__args)...))) 3021 -> decltype( !_VSTD::invoke(_VSTD::move(__fd), _VSTD::forward<_Args>(__args)...)) 3022 { return !_VSTD::invoke(_VSTD::move(__fd), _VSTD::forward<_Args>(__args)...); } 3023 3024private: 3025 template <class _RawFunc, 3026 class = enable_if_t<!is_same<decay_t<_RawFunc>, __not_fn_imp>::value>> 3027 _LIBCPP_INLINE_VISIBILITY 3028 explicit __not_fn_imp(_RawFunc&& __rf) 3029 : __fd(_VSTD::forward<_RawFunc>(__rf)) {} 3030 3031 template <class _RawFunc> 3032 friend inline _LIBCPP_INLINE_VISIBILITY 3033 __not_fn_imp<decay_t<_RawFunc>> not_fn(_RawFunc&&); 3034}; 3035 3036template <class _RawFunc> 3037inline _LIBCPP_INLINE_VISIBILITY 3038__not_fn_imp<decay_t<_RawFunc>> not_fn(_RawFunc&& __fn) { 3039 return __not_fn_imp<decay_t<_RawFunc>>(_VSTD::forward<_RawFunc>(__fn)); 3040} 3041 3042#endif 3043 3044// struct hash<T*> in <memory> 3045 3046template <class _BinaryPredicate, class _ForwardIterator1, class _ForwardIterator2> 3047pair<_ForwardIterator1, _ForwardIterator1> _LIBCPP_CONSTEXPR_AFTER_CXX11 3048__search(_ForwardIterator1 __first1, _ForwardIterator1 __last1, 3049 _ForwardIterator2 __first2, _ForwardIterator2 __last2, _BinaryPredicate __pred, 3050 forward_iterator_tag, forward_iterator_tag) 3051{ 3052 if (__first2 == __last2) 3053 return _VSTD::make_pair(__first1, __first1); // Everything matches an empty sequence 3054 while (true) 3055 { 3056 // Find first element in sequence 1 that matchs *__first2, with a mininum of loop checks 3057 while (true) 3058 { 3059 if (__first1 == __last1) // return __last1 if no element matches *__first2 3060 return _VSTD::make_pair(__last1, __last1); 3061 if (__pred(*__first1, *__first2)) 3062 break; 3063 ++__first1; 3064 } 3065 // *__first1 matches *__first2, now match elements after here 3066 _ForwardIterator1 __m1 = __first1; 3067 _ForwardIterator2 __m2 = __first2; 3068 while (true) 3069 { 3070 if (++__m2 == __last2) // If pattern exhausted, __first1 is the answer (works for 1 element pattern) 3071 return _VSTD::make_pair(__first1, __m1); 3072 if (++__m1 == __last1) // Otherwise if source exhaused, pattern not found 3073 return _VSTD::make_pair(__last1, __last1); 3074 if (!__pred(*__m1, *__m2)) // if there is a mismatch, restart with a new __first1 3075 { 3076 ++__first1; 3077 break; 3078 } // else there is a match, check next elements 3079 } 3080 } 3081} 3082 3083template <class _BinaryPredicate, class _RandomAccessIterator1, class _RandomAccessIterator2> 3084_LIBCPP_CONSTEXPR_AFTER_CXX11 3085pair<_RandomAccessIterator1, _RandomAccessIterator1> 3086__search(_RandomAccessIterator1 __first1, _RandomAccessIterator1 __last1, 3087 _RandomAccessIterator2 __first2, _RandomAccessIterator2 __last2, _BinaryPredicate __pred, 3088 random_access_iterator_tag, random_access_iterator_tag) 3089{ 3090 typedef typename iterator_traits<_RandomAccessIterator1>::difference_type _D1; 3091 typedef typename iterator_traits<_RandomAccessIterator2>::difference_type _D2; 3092 // Take advantage of knowing source and pattern lengths. Stop short when source is smaller than pattern 3093 const _D2 __len2 = __last2 - __first2; 3094 if (__len2 == 0) 3095 return _VSTD::make_pair(__first1, __first1); 3096 const _D1 __len1 = __last1 - __first1; 3097 if (__len1 < __len2) 3098 return _VSTD::make_pair(__last1, __last1); 3099 const _RandomAccessIterator1 __s = __last1 - (__len2 - 1); // Start of pattern match can't go beyond here 3100 3101 while (true) 3102 { 3103 while (true) 3104 { 3105 if (__first1 == __s) 3106 return _VSTD::make_pair(__last1, __last1); 3107 if (__pred(*__first1, *__first2)) 3108 break; 3109 ++__first1; 3110 } 3111 3112 _RandomAccessIterator1 __m1 = __first1; 3113 _RandomAccessIterator2 __m2 = __first2; 3114 while (true) 3115 { 3116 if (++__m2 == __last2) 3117 return _VSTD::make_pair(__first1, __first1 + __len2); 3118 ++__m1; // no need to check range on __m1 because __s guarantees we have enough source 3119 if (!__pred(*__m1, *__m2)) 3120 { 3121 ++__first1; 3122 break; 3123 } 3124 } 3125 } 3126} 3127 3128#if _LIBCPP_STD_VER > 14 3129 3130// default searcher 3131template<class _ForwardIterator, class _BinaryPredicate = equal_to<>> 3132class _LIBCPP_TYPE_VIS default_searcher { 3133public: 3134 _LIBCPP_INLINE_VISIBILITY 3135 default_searcher(_ForwardIterator __f, _ForwardIterator __l, 3136 _BinaryPredicate __p = _BinaryPredicate()) 3137 : __first_(__f), __last_(__l), __pred_(__p) {} 3138 3139 template <typename _ForwardIterator2> 3140 _LIBCPP_INLINE_VISIBILITY 3141 pair<_ForwardIterator2, _ForwardIterator2> 3142 operator () (_ForwardIterator2 __f, _ForwardIterator2 __l) const 3143 { 3144 return _VSTD::__search(__f, __l, __first_, __last_, __pred_, 3145 typename _VSTD::iterator_traits<_ForwardIterator>::iterator_category(), 3146 typename _VSTD::iterator_traits<_ForwardIterator2>::iterator_category()); 3147 } 3148 3149private: 3150 _ForwardIterator __first_; 3151 _ForwardIterator __last_; 3152 _BinaryPredicate __pred_; 3153 }; 3154 3155#endif // _LIBCPP_STD_VER > 14 3156 3157#if _LIBCPP_STD_VER > 17 3158template <class _Tp> 3159using unwrap_reference_t = typename unwrap_reference<_Tp>::type; 3160 3161template <class _Tp> 3162using unwrap_ref_decay_t = typename unwrap_ref_decay<_Tp>::type; 3163#endif // > C++17 3164 3165template <class _Container, class _Predicate> 3166inline typename _Container::size_type 3167__libcpp_erase_if_container(_Container& __c, _Predicate __pred) { 3168 typename _Container::size_type __old_size = __c.size(); 3169 3170 const typename _Container::iterator __last = __c.end(); 3171 for (typename _Container::iterator __iter = __c.begin(); __iter != __last;) { 3172 if (__pred(*__iter)) 3173 __iter = __c.erase(__iter); 3174 else 3175 ++__iter; 3176 } 3177 3178 return __old_size - __c.size(); 3179} 3180 3181_LIBCPP_END_NAMESPACE_STD 3182 3183#endif // _LIBCPP_FUNCTIONAL 3184